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pH/ORP-7500 series industrial online pH meter is a kind of precise micro-computer industry online pH and ORP controller , which with large green font displayed on high-light LCD screen, kinds of prompts and status shows and with easy operation menu.

Main Features

☆  There are two modes for measurement collection single high-resistance mode, and double high-resistance model.
☆  Switch pH＆ORP function by program. Meter can work with kinds of pH＆ORP sensor
☆  Double channels relay or double channels photoelectric switch can be selected.
☆  Double channels relay can support two point alarm control which is suitable for pH or ORP measurement hysteresis. 
☆  There are 2 calibration methods can supports buffer solution calibration and directly input calibration.
☆  Isolated external auto temperature compensation to satisfy high accurate measurement.
☆  Isolated/transferable/reversible/passive/active ,（4~20）mA
☆   Power supply DC 24V.
☆  The meters with rear cover for seal.
☆The meter with strong ability for anti interference. There are Power filter and hardware watchdog circuit
 

Technique Parameters:

Model		pH/ORP-7500 series pH/ORP transmitter controller
Measurement range	pH	0.00 ~ 14.00
	ORP	（-1999 ~ +1999）mV
	Temp.	（0.0 ~ 99.9）℃
Resolution	pH	0.01
	ORP	1mV
	Temp.	0.1℃
Accuracy	pH	±0.1
	ORP	±5mV
	Temp.	±0.5℃
Input impedance		≥1.5×1012Ω
Temp. Compensation range		（0 ~ 99.9）℃
Environment	Temp.	（0 ~ 50）℃
	Humidity	≤85% RH
Temperature sensor		NTC-10K
Cable length		Standard 10m（or customized≤20m）
Control output		Double relay (double contact ON/OFF), backlash of high and low limit can be set
contact capacity		AC 220V/AC 110V 2A(Max)     DC 24V 2A(Max)
Current output		Isolated/transferable/reversible/passive/active ,（4~20）mA current loop （loop resistance≤500Ω）accuracy：±0.5%FS
Power supply		DC 24V±4V
protection		IP65（with back cover）
Consumption		≤3W
Outline dimension		96mm×96mm×103mm（H×W×D）
Hole dimension		91mm×91mm（ H×W ）
Installation		Panel