Air oxygen meter GMH 3691

Hand-held device

Air oxygen sensors

GMH 3691

Features:

Double display for oxygen and temperature
Measured units: O₂-concentration and O₂-partial pressure
Alarm detector with integrated horn
Automatic temperature compensation
Min-/max-value memory, hold function
Serial interface, can be connected to RS232 or USB interface of a PC
Connectable to bus system (up to 5 devices can be connected to one PC interface)
Battery and D.C. operation possible
Operating control: 6 membrane keys for ON/OFF switch, selection of measurement range, min- and max- value memory, hold-function, calibration etc.
Calibration:
- 1-point-calibration: simple quick calibration in atmospheric air (press button to compensate unit to 20,9%).
- 2-point-calibration: first point at atmospheric air (20,9%), second point freely selectable.

Measurement ranges
Oxygen concentration:	0,0...100,0% O₂ (gaseous)
Partial oxygen pressure:	0...1100 hPa O₂
Temperature:	-5,0...+50,0°C

Accuracy (device)	at nominal temperature = +25°C
Oxygen concentration:	± 0,1% ± 1 Digit
Partial oxygen pressure:	± 1 hPa
Temperature:	± 0,1°C ± 1 Digit

Display:	two 4-digit LCDs (12,4 mm or 7 mm high)
Operating temperature:	0...+50°C
Relative humidity:	0...95% RH (non-condensing)
Storage temperature:	-20°C...+70°C
Battery:	9V battery type IEC 6F22 additional d.c. connector for external 10,5-12 V direct voltage supply existing
Power consumption:	approx. 1,5 mA
Automatic-Off-Function:	1...120 min (can be switched off)
Housing:	impact resistant ABS, front side IP65
Dimensions:	142 x 71 x 26 mm
Weight:	approx. 160 g (incl. battery)

Sensors for oxygen measurements

Closed oxygen sensors GGO 369 S and GGO 370

• suitable for under and over pressure
• for using in gas-tight systems
• dimensions: approx. Ø 36 mm x 95 mm (150 mm incl. bend protection)
• weight: approx. 135 g

Application: Suitable for measuring in normal atmosphere and in systems without or with slight under or over pressure. The sensor type features a screw thread and can be built in gas-tight in almost every system directly resp. with tube-adapter.
The acid electrolyte of the GGO 369 S guarantees that the sensor could not be influenced by CO₂.

Open oxygen sensors GOO 369 S and GOO 370

• suitable for air- or gas-stream
• quick temperature compensation
• dimensions: approx. Ø 40 mm x 105 mm (160 mm incl. bend protection)
• weight: approx. 145 g

Application: Because of the special sensor construction the measuring gas streams optimally around the sensor and escapes through holes in the housing into the air. No pressure build-up at slight streaming of the probe, that falsify the result of measurement. Particularly suitable for measuring of gas out of gas-bottle etc. Even measuring indoor-gas concentration is possible.
The acid electrolyte of the GOO 369 S guarantees that the sensor could not be influenced by CO₂.

Technical specifications
	GGO 369 S and GOO 369 S	GGO 370 and GOO 370
Application:	CO₂ containing gases	universal applications, diving
Specific features:	acidic electrolyte	stronger membrane coated electronics temperature compensation
Measurement ranges
Partial oxygen pressure:	0...1000 hPa O₂	0...1100 hPa O₂
Oxygen concentration:	0,0...25,0% O₂(gaseous)	0,0..100,0% O₂
Temperature:	0,0...+50,0°C	0,0...+45,0°C

Sensor:	partial oxygen pressure sensor
Response time t90:	< 15 sec	< 10 sec
Cross sensitivities:	Signal of <0,002% O₂ 100% CO₂, 100% CO, 3000 ppm NO in N₂,1000 ppm H₂ in N₂, 100% C₃H₈, 2000 ppm H₂S in N₂, 2000 ppm SO₂ in N₂, 1000 ppm Benzene in N₂
Working temperature:	0...+45°C	0...+50°C
Relative humidity:	0...95% rF (non-condensing)
Nominal sensor life:	approx. 2 years at nominal condition
Operating pressure:	0,5 to 2,0 bar absolute
Connection:	approx. 1 m cable with Mini-DIN-plug
Storage temperature:	-15°C...+60°C
Housing:	with M16x 1-screw thread (sensor can be connected to line tubes by means of an additional adapter

Air oxygen meter GMH 3691 (without sensor)	154,00 €
Accessories
Interface converter for RS232, electrical isolated (GRS 3100)	47,30 €
Interface converter for RS232, with 5 connection points for the connection of 5 GMH 3691 to one PC (GRS 3105)	100,50 €
Interface converter for USB, electrical isolated (USB 3100)	47,30 €
D.c. connector for external 10,5-12 V direct voltage supply (GNG 10/3000)	21,10 €
Case (GKK 3000)	14,50 €
Device protection bag with cut-out for probe connection (ST-R1)	22,50 €
Replacement battery 9V (GB 9 V)	1,70€
Oxygen sensors
Oxygen sensor GGO 369 S, closed sensor with acid electrolyte, incl. tube adapter - for CO₂ containing gases	149,20 €
Oxygen sensor GOO 369 S, open sensor with acid electrolyte, incl. tube adapter - for CO₂ containing gases	164,60 €
Oxygen sensor GGO 370, closed sensor, incl. tube adapter and T-piece - for universal applications, diving	111,30 €
Oxygen sensor GOO 370, open sensor, incl. tube adapter and T-piece - for universal applications, diving	126,30 €
Cable length 4 m	17,00 €
Cable length 10 m	26,50 €
Replacement sensor element for GGO 369 S and GOO 369 S (GOEL 369 S)	99,60 €
Replacement sensor element for GGO 370 and GOO 370 (GOEL 370)	63,10 €
Replacement tube adapter M16 x 1, for tubes with an inner-diameter of 15 mm (ESA 369)	3,00 €
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Terms of sales and delivery

Products on stock are usually sent out within one week. Nevertheless, please order as early as possible. Transport is normally by UPS standard (±2-3 days within Europe), shipping and packing are billed with € 5,- + shipping costs, from € 200,- only the real shipping costs.
All prices are exclusive VAT. Payments can be made within 30 days by bank transfer, within 14 days with 3% discount. All prices are subject to change without prior notice according to our terms and conditions. Check our website for actual information.

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