Temperature / Humidity / Electrical Data Logging Systems

ACR Systems, Inc provides pocket-sized, battery-powered data loggers and sensors that measure and record temperature, relative humidity, electric current, pressure, process signals, pulse frequency, power quality, indoor air quality and more. Our data loggers’ internal battery has long operation lifespan of up to 10 years.

Our data loggers are used in a wide variety of applications:

Our data loggers can be connected in a network for remote monitoring and data downloading.
srp-network

Featured Products

Data Loggers / Sensors for Temperature Measurement

SmartReader Plus 1

2-channel temperature data logger

  • No. of channels: 1 internal temperature sensor and 1 external temperature probe
  • Compatible external temperature probe: ACR ET series or any NTC thermistor probe
  • Measurement range (internal): -40°C to 70°C

    Measurement range (external): -60°C to 55°C …. 70°C to 255°C

  • Data storage size: 32 kB, 128 kB or 1.5 MB
  • Resolution: 12-bits

Detail

SmartReader Plus 8

8-channel temperature data logger

  • No. of channels: 1 internal temperature and 7 external temperature probes
  • Compatible external temperature probe: ACR ET series or any NTC thermistor
  • Measurement range (internal): -40°C to 70°C
  • Measurement range (external): -60°C to 55°C …. 70°C to 255°C
  • Data storage size: 32 kB, 128 kB or 1.5 MB
  • Resolution: 12-bits

Detail

OWL 100

Single-channel Internal Temperature Data Logger

  • No. of channels: 1 internal temperature sensor
  • Measurement range (internal): -40°C to 70°C
  • Data storage size: 32 kB
  • Resolution: 8-bits
  • IP67 water-resistant casing option available

Detail

OWL 200

Single-channel External Temperature Data Logger

  • No. of channels: 1 external temperature probe
  • Compatible external temperature probe: ACR ET series or any NTC thermistor
  • Measurement (external): -60°C to 55°C …. 70°C to 255°C
  • Data storage: 32 kB
  • Resolution: 8-bits
  • IP67 water-resistant casing option available

Detail

JR-2000

Single-channel USB Temperature Data Logger

  • No. of channels: 1 internal temperature sensor
  • Measurement range (internal): -40°C to 85°C
  • Storage/Memory Size: 100,000 Samples (e.g. 11 days at 10-second samples, 2 months at 1-minute samples)
  • Connector: USB type A
  • Resolution: 
    • -10°C to 50°C = 0.03°C
    • -35°C to -10°C = 0.1°C or better
    • 50°C to 85°C = 0.1°C or better
  • Software: TrendReader® JR  (compatible with Windows 7, 8 & 10)

Detail

JR-1000

Single-channel Temperature Data Logger

  • No. of channels: 1 internal temperature sensor
  • Measurement range (internal): -40°C to 85°C
  • Data storage: 32 kB
  • Resolution: 8-bits

Detail

JR-1001

Single-channel Temperature Data Logger, Intrinsically Safe

  • No. of channels: 1 internal temperature sensor
  • Measurement range (internal): -40°C to 85°C
  • Data storage: 32 kB
  • Resolution: 8-bits

Detail

SmartButton

Single-channel Temperature Data Logger

  • No. of channels: 1 internal temperature sensor
  • Measurement range (internal): -40°C to 85°C
  • Data storage: 2 kB (Up to 2048 consecutive temperature measurements)
  • Resolution: 8-bits

Detail

SmartReader Plus 5

3-channel Temperature Data Logger

  • No. of channels: 1 internal temperature sensor and 2 external temperature (thermocouple) probes
  • Compatible thermocouple probes: Type J, K, S, T or E thermocouple wire
  • Measurement range (internal): -40°C to 70°C
  • Measurement range (external): -200°C to 400°C …. -100°C to 1150°C
  • Data storage size: 32 kB or 128 kB
  • Resolution: 12-bits

Detail

SmartReader Plus 6

8-channel temperature data logger

  • No. of channels: 1 internal temperature sensor and 7 external temperature (thermocouple) probes
  • Compatible thermocouple probes: Type J, K, S, T or E thermocouple probe
  • Measurement range (internal): -40°C to 70°C
  • Measurement range (external): -200°C to 400°C …. -100°C to 1150°C
  • Data storage: 32 kB, 128 kB or 1.5 MB
  • Resolution: 12-bits

Detail

SmartReader Plus 10

4-channel temperature data logger

  • No. of channels: 1 internal temperature sensor and 3 external RTD temperature probes
  • Compatible RTD temperature probe: 100 or 1000 ohms Platinum RTD with a Temperature Coefficient of Resistance (TCR) of 0.00385
  • Measurement range (internal): -40°C to 70°C
  • Measurement range (external): -230°C to 300°C
  • Data storage: 128 kB
  • Resolution: 12-bits

Detail

Nautilus85

Single-Channel Temperature Data Logger, Waterproof

  • No. of channels: 1 internal temperature sensor
  • Measurement range (internal): -40°C to 85°C
  • Data storage: 32 kB
  • Casing material: Anodized Aluminium or Stainless Steel
  • Resolution: 8-bits

Detail

Nautilus135

Single-Channel High Temperature Data Logger, Waterproof

  • No. of channels: 1 internal temperature sensor
  • Measurement range (internal): 10°C to 135°C
  • Data storage: 32 kB
  • Casing material: Anodized Aluminium or Stainless Steel
  • Resolution: 8-bits

Detail

External Temperature Probes

ET-016

External Temperature Probe, General Purpose

  • Measurement range: -35°C to 95°C
  • Cable length: 6 metres
  • Compatible data logger: SmartReader Plus 1, 2, 4 and 8

Detail

OWL-ET-016

External Temperature Probe, General Purpose, OWL

  • Measurement range: -35°C to 95°C
  • Cable length: 6 metres
  • Compatible data logger: OWL 200

Detail

ET-016-SMP

External Temperature Probe, Surface Mount Pipe

  • Measurement range: -35°C to 95°C
  • Cable length: 6 metres
  • Wraparound pipe less than 5 cm diameter
  • Compatible data logger: SmartReader Plus 1, 2, 4 and 8

Detail

OWL-ET-016-SMP

External Temperature Probe, Surface Mount Pipe, OWL

  • Measurement range: -35°C to 95°C
  • Cable length: 6 metres
  • Wraparound pipe less than 5 cm diameter
  • Compatible data logger: OWL 200

Detail

ET-016-STP

External Temperature Probe, Surface Type

  • Measurement range: 20°C to 40°C
  • Cable length: 1.5 metres
  • Compatible data logger: SmartReader Plus 1, 2, 4 and 8

Detail

ET-004

External Temperature Probe, Low temperature

  • Measurement range: -60°C to 55°C
  • Cable length: 3 metres
  • Compatible data logger: SmartReader Plus 1, 2, 4 and 8

Detail

OWL-ET-004

External Temperature Probe, Low temperature, OWL

  • Measurement range: -60°C to 55°C
  • Cable length: 3 metres
  • Compatible data logger: OWL 200

Detail

ET-004-GP

External Temperature Probe, Low temperature

  • Measurement range: -60°C to 55°C
  • Cable length: 6 metres
  • Compatible data logger: SmartReader Plus 1, 2, 4 and 8

Detail

OWL-ET-004-GP

External Temperature Probe, Low temperature, OWL

  • Measurement range: -60°C to 55°C
  • Cable length: 6 metres
  • Compatible data logger: OWL 200

Detail

ET-081

External Temperature Probe, High temperature

  • Measurement range: 10°C to 170°C
  • Cable length: 6 metres
  • Compatible data logger: SmartReader Plus 1, 2, 4 and 8

Detail

OWL-ET-081

External Temperature Probe, High temperature, OWL

  • Measurement range: 10°C to 170°C
  • Cable length: 6 metres
  • Compatible data logger: OWL 200

Detail

ET-086

External Temperature Probe, Oven

  • Measurement range: 70°C to 255°C
  • Suitable for oven temperature sensing
  • Cable length: 6 metres
  • Compatible data logger: SmartReader Plus 1, 2, 4 and 8

Detail

OWL-ET-086

External Temperature Probe, Oven, OWL

  • Measurement range: 70°C to 255°C
  • Suitable for oven temperature sensing
  • Cable length: 6 metres
  • Compatible data logger: OWL 200

Detail

WTS-SR

Waterproof Temperature Probe

  • Measurement range: -40°C to 105°C
  • IP67 (waterproof) rated
  • Cable length: 3 metres
  • Compatible data logger: SmartReader Plus 1 and 8

Detail

TCJ

Thermocouple Wire, Type J

  • Measurement range: -50°C to 200°C
  • Wire is 20 gauge with duplex insulated Teflon® jacket
  • Either twist or weld the tip
  • Compatible data logger: SmartReader Plus 5 and 6

Detail

TCJ-Welded

Thermocouple Wire, Type J, Welded

  • Measurement range: -50°C to 200°C
  • Wire is 20 gauge with duplex insulated Teflon® jacket
  • Compatible data logger: SmartReader Plus 5 and 6

Detail

TCK

Thermocouple Wire, Type K

  • Measurement range: -100°C to 200°C
  • Wire is 20 gauge with duplex insulated Teflon® jacket
  • Either twist or weld the tip
  • Compatible data logger: SmartReader Plus 5 and 6

Detail

TCK-Welded

Thermocouple Wire, Type K, Welded

  • Measurement range: -100°C to 200°C
  • Wire is 20 gauge with duplex insulated Teflon® jacket
  • Compatible data logger: SmartReader Plus 5 and 6

Detail

TCT

Thermocouple Wire, Type T

  • Measurement range:-200°C to 200°C
  • Wire is 20 gauge with duplex insulated PVC jacket
  • Either twist or weld the tip
  • Compatible data logger: SmartReader Plus 5 and 6

Detail

TCT-Welded

Thermocouple Wire, Type T, Welded

  • Measurement range: -200°C to 200°C
  • Wire is 20 gauge with duplex insulated PVC jacket
  • Compatible data logger: SmartReader Plus 5 and 6

Detail

Data Loggers / Sensors for Relative Humidity (RH) Measurement

SmartReader Plus 2

4-channel Relative Humidity & Temperature Data Logger

  • No. of channels: 1 internal temperature sensor, 1 internal RH sensor, 1 external temperature and 1 external RH sensors
  • Compatible external temperature & RH probe: ACR EH-020A model
  • Measurement range (internal): -40°C to 70°C , 0 to 95% RH (non-condensing)
  • Measurement range (external): -20°C to 40°C , 10 to 90% RH
  • Data storage size: 128 kB
  • Resolution: 12-bits

Detail

TRH 1000

Two channel Temperature & RH data logger

  • No. of channels: 1 internal temperature and 1 internal RH sensor
  • Measurement range (internal): –40°C to 70°C , 0 to 100% RH
  • Data storage size: 64 kB
  • Resolution: 8-bits

Detail

EH-020A

RH and Temperature Probe

  • Measurement range: 10 to 90% RH, -20°C to 40°C
  • Cable: 90 cm
  • Every RH reading is temperature compensated for accurate readings
  • Compatible data logger: SmartReader Plus 2 and 4

Detail

Data Loggers / Sensors for Electrical Current & Voltage

SmartReader Plus 3

8-channel AC Current, Voltage & Temperature Data Logger

  • No. of channels: 1 internal temperature sensor and 7 voltage inputs (0-5 Vdc) for use AC current transducer and single-phase/3-phase AC voltage transducers
  • Compatible external sensors: ACR current probe and voltage transducer
  • Measurement range (internal): -40°C to 70°C
  • Measurement range (external): Up to 600VAC, 3-phase ; 1000 Amps 50/60Hz
  • Data storage size: 32 kB, 128 kB or 1.5 MB
  • Resolution: 12-bits
  • Below application parameters can be determined:
    • Power energy consumption (kWh)
    • Real power (kW)
    • Apparent power (kVA)
    • 2 or 3 Phase Balancing – Amperage (A)

Detail

CT-153

AC Current Probe

  • Measurement range: 0 to 10 Amp, 0 to 25 Amp or 0 to 50 Amp, 60 Hz
  • Cable length: 30 cm
  • Compatible data logger: SmartReader Plus 3

Detail

CT-253

AC Current Probe

  • Measurement range: 0.5 to 250 Amps, 50/60 Hz
  • Operating temperature: -10° to +55°C
  • Cable length: 1.5 metres
  • Compatible data logger: SmartReader Plus 3

Detail

CT-353

AC Current Probe

  • Measurement range: 5 to 500 Amps, 50/60 Hz
  • Cable length: 1.5 metres
  • Compatible data logger: SmartReader Plus 3

Detail

CT-453

AC Current Probe

  • Measurement range: 0.1 to 1000 Amps, 50/60Hz
  • Cable length: 1.5 metres
  • Compatible data logger: SmartReader Plus 3

Detail

VT-3P

Voltage Transducer

  • Measurement range: 3-phase, 0 to 600 VAC, 50/60Hz
  • Compatible data logger: SmartReader Plus 3 and 7

Detail


Data Loggers / Sensors for Power Quality

powerwatch_2

PowerWatch 220/240V

Voltage Disturbance Recorder

  • No. of channels: 1 (Live to Neutral, Neutral to Ground)
  • Events detected: Surges, sags, impulses, dropouts, outages, and frequency variations
  • Alarm Type: flashing red LED
  • Data storage size: 32 KB

Detail

Data Loggers / Sensors for Voltage Pulse / Relay Switch Contact Input

SmartReader Plus 9

2-channel Pulse Data Logger

  • No. of channels: 2 external inputs for pulse signal or dry contact closure
  • Pulse input range: +24/-22 volts DC
  • Data storage size: 128 kB
  • Resolution: 12-bits

Detail

Data Loggers / Sensors for Pressure

SmartReader Plus 4

4-channel Pressure, Temperature & Relative Humidity Data Logger

  • No. of channels: 1 internal temperature sensor, 1 external pressure input, 1 external temperature input and 1 external RH input
  • Measurement range (internal): -40°C to 70°C
  • Measurement range (external pressure): up to 150 PSI
  • Compatible external probe: ACR EH-020A model (Temperature & RH), ACR ET series or any NTC thermistor probe (Temperature)
  • Data storage size: 128 kB
  • Resolution: 12-bits

Detail

SmartReader Plus 4 LPD

2-channel Low Pressure Differential Data Logger

  • No. of channels: 1 internal temperature sensor and 1 internal pressure sensor
  • Measurement range (internal temperature): -40°C to 70°C
  • Measurement range (internal pressure): ±125 Pa, ±250 Pa, ±500 Pa, ±1.25 kPa or ±2.5 kPa
  • Suitable measuring medium (for internal pressure): Non-corrosive gases and dry air
  • Data storage size: 32 kB
  • Resolution: 12-bits

Detail

PH-025-075

Pressure Hose

  • Measurement range: 0 to 75 PSI
  • Size: OD 6.35mm (0.25″), ID 4.24mm (0.167″)
  • Compatible datalogger: SmartReader Plus 4

Detail

PH-025-150

Pressure Hose

  • Measurement range: 0 to 150 PSI
  • Size: 0.25″ OD, 0.167″ ID
  • Compatible data logger: SmartReader Plus 4

Detail

Data Loggers / Sensors for Process Signal

SmartReader Plus 7

8-channel Process Signal Data Logger

  • No. of channels: 1 internal temperature sensor and 7 external channels for analogue voltage and/or current signals
  • Measurement range (internal): -40°C to 70°C
  • Measurement range (external): Up to 10VDC for voltage signal, Up to 25 mA for current signal
  • Data storage size: 32 kB, 128 kB or 1.5 MB
  • Resolution: 12-bits

Detail

OWL 400

Single-channel DC Voltage Data Logger

  • No. of channels: 1 external DC voltage input
  • Measurement range (external): 0 to 121 mV …. 0 to 38.4V, software selectable
  • Data storage size: 32 kB
  • Resolution: 8-bits

Detail

OWL 500

Single-channel DC Current Data Logger

  • No. of channels: 1 external DC current input
  • Measurement range (external): 0 to 24 mA
  • Data storage size: 32 kB
  • Resolution: 8-bits

Detail

Data Loggers / Sensors for Indoor Air Quality

IAQ Logger

5-channel Temperature, Relative Humidity (RH) and Carbon Dioxide (CO2) Data Logger

  • No. of channels: 1 internal temperature sensor, 1 external CO2 sensor, 1 external RH sensor and 2 external temperature and RH sensor
  • Compatible external temperature & RH probe: ACR EH-020A model
  • Measurement range (internal): -40°C to 70°C
  • Measurement range (external CO2): 0 to 10,000 ppm
  • Measurement range (external temperature & RH): -20°C to 40°C, 10 to 90% RH
  • Data storage size: 32 kB
  • Resolution: 8-bits

Detail

Software for Data Logger

TrendReader 2

Control, Graphing and Analysis software

  • Compatible Data Logger: SmartReader Plus , IAQ, OWL and Nautilus
  • Configure Data Logger settings.
  • Download measurement data from Data Logger.
  • Viewing measurement data in table or graphical format.
  • Export measurement data to TXT, BMP, PDF, JPG and CSV formats.
  • Available with USB or RS232 interface

Detail

TrendReader 2 Express

Control, Graphing and Analysis software

  • Compatible Data Logger: JR-1000/1001, TRH-1000 and Nautilus 85/135
  • Configure Data Logger settings.
  • Download measurement data from Data Logger.
  • Viewing measurement data in table or graphical format.
  • Export measurement data to ASCII and CSV formats.
  • Available with USB or RS232 interface

Detail

EventReader

Power Quality Analysis software for the PowerWatch

  • Compatible Data Logger: PowerWatch
  • Configure Data Logger settings.
  • Download measurement data from Data Logger.
  • Viewing measurement data in table or graphical format.
  • Export measurement data.
  • Available with USB or RS232 interface.

Detail