Manufacturer : TECHNO MORIOKA
Model: 7721 series

A high-precision electrical resistivity meter (resistivity meter) capable of simultaneously measuring the electrical resistivity at two locations.

management; High precision measurement; Proofreading support; Alarm; AC power supply; dc power supply; Serial communication; Panel mounting; Water quality information available; Analog output; Simultaneous measurement at two locations

This is a highly accurate electrical resistivity meter (resistivity meter).
It can connect to two sensors, allowing for simultaneous measurement of water quality at two locations with a single unit.
It features a variety of external outputs, including alarm output, analog output, and serial communication.
This electrical resistivity meter (resistivity meter) is ideal for measuring pure and ultrapure water used in semiconductor and pharmaceutical applications.
Please use it in combination with the 7701 sensor series.

Product-compatible water quality

Product usage

Product Specifications

Model	7721-A100N		7721-A200N
Measurement range (automatic temperature compensation)	0 to 20.00 MΩ･cm
Product size	W96 × H96 × D164 mm ; Panel mounting hole diameter: 92 mm ; Recommended panel thickness: 1.6 to 2.3 mm
accuracy	Repeatability: ±0.5% FS
Electrode input	Up to 2 items
output	Alarm output: Connection to external device / 2 points (C-contact) Analog output: 4-20mA / 2 outputs Digital output: 2-wire RS-485 / 1 channel
power supply	A100 series: AC 85-264V 50/60Hz A200 series: DC 24V ±10%
Power consumption	8.5W or less
Measured water temperature	0 to 100°C
temperature compensation	Digital temperature compensation
Usage environment	Ambient temperature 0-50°C / Humidity 5-80%RH (non-condensing)
others	Data from up to 15 water quality meters can be acquired from a single host via communication (RS-485). A single multi-function water quality meter can measure water quality at two locations . Panel mount display included. Two sensor inputs.

Compatible sensors

Please select based on the pipe diameter, material, operating temperature, and pressure of the piping to be installed.

Model	7701-S300	7701-S310	7701-S600	7701-S400	7701-S500
Product image
Mounting pipe diameter	R3/4	R3/4	R3/4	R1/2	R1/2
Mounting piping material	resin piping	resin piping	Resin and metal piping	Resin and metal piping	resin piping
Operating pressure	1.5MPa or less	1.5MPa or less	1.5MPa or less	0.5MPa or less	1.5MPa or less
temperature	0-100℃	0-100℃	0-100℃	0-80℃	0-100℃
Sensor cable	Directly attached cable, 5m	Separately	Separately	Separately	Separately