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JENCO INSTRUMENTS was established more than 40 years ago on the idea that innovative water quality instruments should be available at competitive prices and their mission is to bring innovation to anyone who works with analytical instruments.

Since the launching of the world's first portable digital pH meter in 1975, Jenco Instruments has continued to focus only on building water quality instruments for measuring pH, ORP, conductivity, TDS, salinity, resistivity, dissolved oxygen, ion, turbidity and temperature. 

This single minded-focus is combined with Jenco's obsession with finding the best balance between quality and value - whether it is the simplest testers or the most advanced, gesture-operated, WIFI-enabled benchtop meters.   

pH Industrial Online Controller/Transmitter


pH Industrial Online Controller/Transmitter


Features : 
  • Easy to install 1/8 DIN plastic casing
  • Clear LCD displays pH, mV or temperature with backlight
  • Universal power supply input from 100~240V AC
  • Automatic buffer recognition of US and NIST buffer sets. Calibrated data is stored in memory and ready for use on power up
  • Automatic or manual temperature compensation
  • Displays absolute and relative ORP
  • Two sets of programmable on/off relays for pH or ORP (3621)
  • Isolated and reversible 4-20mA current output for pH or ORP allows it to be used as a proportional output (3631)
  • RoHS compliant


Range :

pH : -2.00~16.00pH
mV (absolute / relative) : -1999~+1999mV
Temperature : -10.0~120.0°C

Resolution : 

pH : 0.01pH
mV (absolute / relative) : 1mV / 1mV
Temperature : 0.1°C

Accuracy :

pH : ±0.1% ±1 digit
mV (absolute / relative) : ±0.1% ±1 digit
Temperature : ±0.3°C

pH Buffer Recognition : US (4.01, 7.00, 10.01) or NIST (4.00, 6.86, 9.18), user selectable
pH Electrode Offset Recognition : ±100mV at pH 7.00 / -91.7mV to +108.3mV at pH 6.86
pH Electrode Slope Recognition : ±30% at pH 4.00, 4.01, 9.18 or 10.01
Temperature Compensation : Manual / Auto -10.0~120.0°C (Thermistor, 10KΩ / PT-1000)
Input Impedance : >10^13Ω
Input Select : User selectable pH or ORP
Control Type / Relay Output (3621) : 2 ON/OFF controls / 5A at 115V AC or 2.5A at 220V AC, resistive load only
Current Output Range / Scale (3631) : 4 to 20mA (isolated) / Liner
Maximum Load : 500Ω
Isolation Voltage : 500VDC 
Display : LCD, with backlighting 
Power : 100~240V AC at 50/60Hz
Ambient Temperature Range : From 0~50°C
Case : 1/8 DIN case, 90mm depth

Accessories :

IP-600-10 : For wastewater (pH glass electrode, PPS housing, NPT3/4'' thread, 20m cable)
IP-600-9-TH : For wastewater (pH glass electrode, PPS housing, NPT3/4'' thread, 5m cable, with temperature thermistor)
IR-500-8 : For wastewater (ORP glass electrode, PPS housing, NPT3/4'' thread, 5m cable)
009A : Protective submersion housing
012-15-00 : Waterproof enclosures


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