The Eutech Instruments αlpha pH 190 1/8 DIN pH / ORP Controller with Temperature display and Transmitter control is easy with the Alpha pH 190 limit controllers. Featuring 6 sub-menus accessible via a four-button keypad for quick, easy setup and calibration, the controller/transmitters also come with two levels of password to protect against unauthorised tampering.
- For faster and more convenient control, choose the Alpha pH 190 which allows direct access to the set-point adjustment and calibration menus.
- Easy push-button calibration with USA/NIST buffer recognition for fast, effortless calibration. Controller freezes data transmission and relay activities during calibration and maintenance
- Symmetrical mode of operation for clear, uninterrupted readings even in electronically noisy environments
- Two SPDT relays with independent hysteresis – effective high/low set-points limit control with minimal relay-chattering
- Choice of automatic or manual temperature compensation. Three-wire system compensates error due to cable resistance
- 85 to 250 VAC. 50/60 Hz or DC variable input allows controller to be used with a wide range of supply voltages
- Full-scale 4 to 20 mA galvanically isolated current output for process control
Specifications:
- pH
- Range 0.00 to 14.00 pH
- Resolution 0.01 pH
- Accuracy ±0.01 pH
- ORP
- Range -999 to 1000 mV
- Resolution 1 mV
- Accuracy ±2 mV
- Temperature
- Range -10 to 110 ºC
- Resolution 0.1 ºC
- Accuracy ±0.5 ºC
- Sensor Pt100; 2 or 3 wire
- Compensation Auto/manual (0 to 100 ºC)
- Set Point And Controller Functions
- Set point 1 (SP1)/ set point 2 (SP2) 0.00 to 14.00 pH or -999 to 1000 mV
- Switching pH Hysteresis 0.00 to 2.00 pH
- Switching ORP Hysteresis 0 to 300 mV
- Function Limit control
- Contact Outputs 2 SPDT relays
- Switching Voltage/ Current/Power Max. 250 VAC / max. 3 A / max. 600 VA
- Electrical Data And Connections
- Transmitter Function 4 to 20 mA scalable outputs for pH/ORP, galvanically isolated
- Load 200 Ohm
- pH/ORP Input BNC (1012 impedance); asymmetrical/symmetrical
- Connection Terminal 3-pin, 7-pin & 9-pin terminal, detachable blocks
- Display
- Power Supply
- Input 85 to 250 VAC, 50/60 Hz
- Main Fuse 250 mA, anti-surge, S504 Bussman
- EMC Specifications
- Emitted Interference According to EN 61326
- Immunity To Interference According to EN 61326
- Environmental Conditions
- Operating Temperature Range -10 to 50 ºC
- Max. Relative Humidity 10 to 95 % (non-condensing)
- Mechanical Specifications
- Dimensions (WxHxD) 96 x 48 x 150 mm
- Weight 300 g (unit) / 350 g (packed)
- Ingress Protection IP50
