1435

1435 Positioner PDF

1436 1436 Positioner PDF

1434-1436 Overview PDF

The units are available as either models ZA (3½-digit) or ZB, ZP (4½-digit) and comply with standard mounting dimensions 96 x 48 mm.  They are both fitted with 14mm high red LED displays and are accurate to 0.1% of the effective range limit.  The display value is easily set using the two-point method, by applying respective measurement signals and setting the required display variable. The use of various supply voltages and optional  sensor supply contribute to the universal applicability of the display units.  While in the ZA and ZB models, the setting potentiometer is located safely behind the protective front panel away from unauthorized access, the model ZP can be digitally programmed at the front using a disconnectable keypad and also equipped with up to a maximum of 4 relay contacts and an analogue output or digital serial interface.

The digital display units of the 1275 series are used in mechanical installations, as evaluating units for pressure gauges and temperature monitoring devices, as indicators for flow meters or to display electrical signals of the kind supplied by all GEMÜ sensors and pick-ups.

They are used as units for measured value acquisition for computers.  The a precision display in any required unit of measurement, simple limiting value adjustment and range of useful options, these digital indicator models provide an invaluable aid to operating staff.

Type 1275/000/ZA and ZB (Basic configuration)

Type 1275/000/ZP (Multi-function display)

The E-module converts an a.c. voltage to a 20 V pulsed unidirectional voltage.

An external switch can be used to reverse the voltage polarity and hence the direction of rotation of d.c. actuators.

The respective end positions of the actuator, "open" or "closed" are indicated by LED’s (green LED or red LED).  The power supply is indicated by a yellow LED.

In parallel with the programmable outputs, an additional unsmoothed 20 V d.c. terminal is available (e.g. the pilot conductor for E-module 1570).

The voltage transformer is built into a universally compatible housing which is designed for panel mounting or direct attachment to the respective GEMÜ actuator.

The output voltage is protected by a 1.6 A fuse.

Voltage: 24 V d.c.
Permissible voltage variation: ± 10%
Power consumption: 2W
N.B.: A charging period of at least 16 h is required before putting the unit into service

Max. input/output loading:   24V d.c., 4A
Output voltage:  UB16.5 V d.c.
Capacity: 110 mA/h
Internal fuse: M 4/250 V
Weight: 410 g  (.90 lbs.)
Cable gland: PG 13.5

The temperature transducer type 3220 converts to the physical variable temperature proportionally into an electrical signal.  It is available in the form of a two-wire transducer (4-20 mA) and as a temperature measuring instrument with an optional power (0/4 – 20 mA) or relay output (MIN and MAX switching points).

The process connection is configured as standard with male threads, to DIN 3852 in sizes G 1/2 A and G 3/4A.

Electrical connections are effected using an electrical plug in compliance with DIN 43650, PG 11.

The transducer can be mounted in any position.

After screwing in the connecting element, the upper part of the housing can be turned up to ±180° to the required position by releasing the fastening screws.

Components coming into contact with the medium are made of PVDF or stainless steel, the housing is made of ABS and the seal of FPM.  Other seal materials are available on request.

Type 3220

The pressure transducer type 3120 converts the physical variable pressure proportionally into an electrical signal.  It is available in the form of a two-wire transducer (4-20mA) and as a pressure measuring instrument with an optional power (0/4-20mA) or relay output (MIN and MAX switching points).  The pick-up is temperature compensated.

The element connecting the transducer to the pipeline is configured as standard with male thread, optionally to DIN 3852 or DIN 16288, in sizes G 1/4 A, G 1/2 A and G 3/4 A.

Electrical connections are effected using an electrical plug in compliance with DIN 43650, PG 11.

The transducer can be mounted in any position.

After screwing in the connecting element, the upper part of the housing can be turned up to ±180° to the required position by releasing the fastening screws.

Components coming into contact with the medium are made of PVDF or stainless steel, the housing is made of ABS and the seal of FPM.  Other seal materials are available on request.

Type 3120

The flow transmitter picks up the entire volumetric flow and is therefore insensitive even in the event of an uneven flow profile within a cross-section.

There is no need to adhere to a special mounting position or other installation parameters.  A mounting distance of 5 times DN on the inlet and outlet side is sufficient.

Components coming into contact with the medium are made of PVDF, with the shaft and bearings in a ceramic material.  The housing is made of PVC.

The electronic evaluation system including the sensor is mechanically attached to the turbine housing by means of stainless steel screws.

Rotation of the turbine is picked off inductively, with the speed of the rotor proportional to flow.

The turbine can be quickly, reliably and simply mounted and removed by means of a union with DIN bushes.

Type 3020

In the case of loss of mains supply, the E-Module supplies power to the connected d.c. actuator by means of integral rechargeable battery.

In normal operation the battery is held on trickle charge from the main voltage.

The required final position of the actuated unit on loss of mains power can be programmed by means of a selector switch.

The setting of the switch can be sealed against unauthorized interference by a transparent cover over the switch lever.

LED indicators built into the unit show whether the mains supply (yellow LED) or the emergency supply (red LED) is in use.

Type 1570
Emergency power supply unit built into a universal compatible plastic housing, designed for incorporation in a control panel or direct mounting onto the corresponding GEMÜ actuator.

Example:
Type 423 + 1570

Voltage: 110, 220 V/50-60Hz
Permissible voltage deviation: ± 10%
Power consumption: 35 VA

Output voltage: 20 V d.c. unsmoothed
Output current: 1.4 A
Input fusing: M 1.6/250 V
Weight: 970 g
Cable gland: PG 13.5

   

The type 1520 and 1521 isolating switch amplifiers are suitable for the following applications:

• Overload protection for light duty switches
• Mains voltage isolating component for main circuits and also for control circuits
• Switch position indicators

When the isolating switch amplifier is used, reed switches and other light duty switches will be protected against overloads since they will then not have to deal with currents above their rating.  There is a danger of overload, with sparking and high currents caused by self-inductance voltages when breaking inductive loads such as power relays, solenoid valves and motors.

Both the control circuits are galvanically separated from the mains so that, if an earth fault occurs, no high voltages will appear on the installation.

These E-Modules are used in conjunction with GEMÜ type series 1251-1257 limit switches or GEMÜ type series 1211, 1214 and 1232 position indicators.

Type 1520

Type 1520/000/Z 02
Desk or panel mounting, 2 relays
1 x Min. (red LED); 1 x Max. (red LED); 1 x mains (yellow LED)

Type 1520/000/Z 04
Desk or panel mounting, 4 relays
2 x Min. (red LED); 2 x Max. (red LED); 1 x mains (yellow LED)

Type 1521

Type 1521/000/Z 02
Eurocard with 31 pole terminal block to DIN 41617 for 19" or 24" rack; 2 relays
1 x Min. (red LED); 1 x Max. (red LED); 1 x mains (yellow LED)

Type 1521/000/Z 04
Eurocard with 31 pole terminal block to DIN 41617 for 19" or 24" rack; 4 relays
2 x Min. (red LED); 2 x Max. (red LED); 1 x mains (yellow LED)