pH/ORP/Temp Industrial Online /Transmitter 3621/3631

• Easy to install 1/8 DIN plastic casing.

•  Clear LCD displays pH, mV or temperature with backlight.

• Universal power supply input from 100-240VAC.

• Automatic buffer recognition of US and NIST buffer sets. Calibrated data is

      stored in memory and ready to 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.

Specifications

Specifications

Range

Resolution

Accuracy

pH

 -2.00~16.00pH

0.01pH ±0.1%

 ±1 digit

mV (absolute / relative)

 -1999~+1999mV

1mV / 1mV

 ±0.1%±1 digit

Temperature

 -10.0~120.'C

 0.1'C

 ±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 -10.0~120.01 (Thermistor, 10K ohm / PT-1000).

Input Impedance

 >1013 ohms.

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 20 mA (isolated) / Liner

Maximum Load

500 ohm

Isolation Voltage

500 VDC

Display

LCD, with backlighting.

Power

100~240VAC at 50/60 HZ.

Ambient Temperature

Range From 0~501.

Case

 1/8 DIN case, 90mm depth.

Accessories

IP-600-10

 For wastewater (pH, glass body, PPS housing, NPT3/4’’ thread, 20 m cable).

IP-600-9 TH

For wastewater (pH, glass body, PPS housing, NPT3/4’’ thread, 5 m cable, with 10K thermistor).

IR-500-8

For wastewater (ORP, glass body, PPS housing, NPT3/4’’ thread, 5 m cable).

009A

Protective submersion housing.

012-150-00

Waterproof enclosure