Product Description; Construction; Gemü 1270/1271 Construction; Gemü 1272/1273 Construction - GEM 127 Series Operating Instructions Manual

4 Product description

4 Product description

4.1 Construction

4.1.1 GEMÜ 1270/1271 construction
3
Item
1 Plug
2 Instrument sensor
3 Locking screw
4.1.2 GEMÜ 1272/1273 construction
6
5
4
Item
1 Plug
2 LED display
3 Instrument sensor
4 Locking screw
5 "Min" key
6 "Max" key
4.2 GEMÜ 1272/1273 status LED
LED Status
red Product not ready for operation and not
initialized:
Output 21 mA (standard range: 4–20
mA)
GEMÜ 127x
1
2
Name
1
2
3
Name
Description
LED Status
green
lit (on)

4.3 Function

Fig. 1: Instrument sensor operating principle
The float in the flowmeter, which is equipped with a perman-
ent magnet, is pushed past the instrument sensor by the flow.
The instrument sensor is equipped with a reed contact chain.
This enables reading out the float position.
4.3.1 GEMÜ 1270 / 1271 function
The GEMÜ 1270 / 1271 instrument sensors output the meas-
ured values as a voltage signal via a voltage divider (Rg = 10
kΩ).
4.3.2 GEMÜ 1272 / 1273 function
The GEMÜ 1272 / 1273 instrument sensors output the meas-
ured values as a 2-wire current signal 4 - 20 mA. This signal
can be directly processed.
4.4 GEMÜ CONEXO
The interaction of valve components that are equipped with
RFID chips and an associated IT infrastructure actively in-
crease process reliability.
6 / 20
Description
Magnet not recognized:
• Float is within the range of the instru-
ment sensor:
Wrong float/inappropriate variable
area flowmeter
• Float is outside the range of the in-
strument sensor:
Value outside the measuring range
Product ready for operation and initial-
ized
Acceptance of the value upon initializa-
tion of the product
LED conditions
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