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.
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
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
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
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
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
- Software: TrendReader® JR (compatible with Windows 7, 8 & 10)
- 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
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
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
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
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
Nautilus Standard
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
Nautilus High Temperature
Single-Channel High Temperature Data Logger, Waterproof
- No. of channels: 1 internal temperature sensor
- Measurement range (internal): 10°C to 125°C
- Data storage: 32 kB
- Casing material: Anodized Aluminium or Stainless Steel
- Resolution: 8-bits
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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)
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
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
CT-353
AC Current Probe
- Measurement range: 2 to 500 Amps, 50/60 Hz
- Cable length: 1.5 metres
- Compatible data logger: SmartReader Plus 3
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
VT-3P
Voltage Transducer
- Measurement range: 3-phase, 0 to 600 VAC, 50/60Hz
- Compatible data logger: SmartReader Plus 3 and 7
Data Loggers / Sensors for Power Quality
PowerWatch – 220V
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
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
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
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
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
PH-025-150
Pressure Hose
- Measurement range: 0 to 150 PSI
- Size: 0.25″ OD, 0.167″ ID
- Compatible data logger: SmartReader Plus 4
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
OWL 400 – DC Voltage
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
OWL 500 – DC Current
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
Data Loggers / Sensors for Compressed Air
CAL (Compressed Air Logger)
Provides easy monitoring and troubleshooting of pneumatic control systems. All system parameters (Temperature, RH, Pressure and AC current) recorded on one Datalogger.
- No. of channels: 8 Channels (Temperature, Humidity, Pressure, Electric Current, Process Signal)
- Temperature Channel Accuracy: ±0.3°C over 0 to 70°C (±0.5°F over 32 to 158°F)
- Relative Humidity Channel Accuracy: ±3% RH over 10 to 90% RH
- Pressure Channel Accuracy: ±0.7 PSI (±0.5 Pa)
- Process Signal Channel Accuracy: ±0.5% FS + Transducer
- Amprobe Current Channel Accuracy: ±3.5% FS above 10%
- Resolution: 12 bit Converter 1 part in 4096
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
TrendReader 2 Express
Control, Graphing and Analysis software
- Compatible Data Logger: JR-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
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.
