Home //Products // Industrial Instruments // Measuring Instruments GRYF 9000 // TYPES LIST

GRYF 9401 - oximeter, thermometer

The GRYF 9000 series measuring instruments are modular measuring instruments for industrial measurements.
Request a quote
The GRYF 9000 series measuring instruments are modular measuring instruments for industrial measurements.

The device can be used separately as an autonomous measuring and control unit with the possibility of transmitting the measured quantity or it can be set up using the RS485 digital communication line into measuring groups (up to 32 units) connected to the PC. In such an assembly, it is possible to perform on the PC visualization of the technological process, to transfer and archive the measured data, to control the technological process using the measured values, to transmit different levels of messages and alarms. Archived data can be further processed in a spreadsheet (data is stored in DBF files). In case of PC failure or communication, individual modules can switch to autonomous measurement and control mode. When using the RS485 line, the measured temperature can be transmitted next to the main measured value.

The instrument is operated by four buttons on the front panel. Some functions may be protected against unauthorized interference in the menu (eg prohibition of setting of PI controller parameters, prohibition of calibration). The measured value is displayed with a 5-digit LED visible.


The devices are manufactured in separate modules in DIN rail version with dimensions 90 x 106 x 58 mm in basic IP40 protection and can be supplied separately or already installed in a plastic box with transparent door with IP65 protection.

The instruments are equipped with basic measurement and temperature measurement, temperature compensation of the main measured value (if required), two outputs - adjustable switches. During production, the devices can be supplemented by internal data transfer modules and PI controller.

Transmission module (output measurement) - output - analogue 0 – 20mA, 4 – 20mA  

- digital RS 485 

Control Module (PI Controller) - output - voltage 0 – 1V, 0 – 5V, 0 – 10V

pulse 0 – 110 impulse/min

Separate external modules can be supplied to the devices:

  • Impedance converter for remote measurements of pH, mV, O2 design on DIN rail, measuring head or electrode body.
  • Relay set 2 outputs (2x changeover contact)
  • Separate current line for transmitting temperature readings 0 – 20mA , 4 – 20mA
GRYF 9401
Measuring range0.0 – 80.0mg/l , 0 – 400%
Measurement accuracy
±0.5 , ±1dig.
Temperature compensationaut. 0 – 40°C
Temperature measurement range-50 – 200 °C
Temperature measurement accuracy ±0.1°C ,  ±1 dig.
Oximeter SensorClark's type
Power voltage12 – 35V  DC / 12 – 24V  AC 
Power consumption from the power supplymax. 3W
Consumption from the clamps of the rectifier (S30, S31)max. 200mA
Consumption from the inner source 5V  (S32, S33)max. 100mA
Electronic switches (logic outputs)28V , 100mA  DC
Log. input - voltage for logic 1– 35V  DC / 11 – 60V  AC
Operating temperature range– 50°C
Storage temperature range-20 – 80°C


GRYF HB, spol. s r. o. is a manufacturer of multi-functional measuring instruments used for measuring electrochemical and physical values such as pH, temperature, conductivity, oxygen, redox potential.

Where to find us

GRYF HB, spol. s r.o.
Cechova 314, 580 01 Havlickuv Brod

Na Tisine 1396, 580 01 Havlickuv Brod

Opening hours: Mon-Fri 7:00 -- 15:30


We launched the IFFMan fish farm automation application this year. Our products are necessary devices in the configuration process, where everyone simply builds their farm and then controls it conveniently from a mobile phone or computer.

Do you want to know more? Visit

Quick contact
+420 569 425 024
+420 602 468 083