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Multi-function Controller - H2021
 

H2021 is extremely versatile instrument. Almost all sensor inputs are programmable like thermocouples, resistance inputs, process inputs mV- and potentiometer inputs. Meter provides 24 VDC, 150 mA power for sensors.

The controller has three slots, one for inputs ( obligatory) and two additional slots for output, alarms or serial signal. By changing input card you can get another instrument like pulse meter (H2051) or strain gage sensors (H2041) etc. Changing of input card changes meters model number; each meter has its own data sheet and instruction manual.

Meter program supports many additional card combinations. Furnishing the meter needs no calibration, only the sensor choises and corresponding settings shall be made by front panel keys. Analog conversation is made by 16 bit AD-converter (resolution 1/64000) and scanning rate is 15 measurements/second. You can select display update between 3-15 times/second. In case of interference environment or by narrow spans display can be damped by digital filter. Auto-calibration ensures calibration stability.

 

 

Applications 

- Temperature controller.

- Panel display with alarms and / or for network applications.
- Flowmeter for differential pressure tansmitter.
- Display & power supply for 2-, 3- and 4-wire transmitters.

Technical data 

Process inputs

Linear

0...20 mA, 4...20 mA, 0...10 V

Squared

0...20 mA, 4...20 mA

Display scaling

On whole display range, 999999

Input resistance

Current inputs 50 W, voltage inputs > 1 MW

Accuracy

0.02% FS

Linearity

0.005% FS

Sensor supply

24 VDC, max 150 mA

RTD sensors

PT100

-200...+700 0C

PT1000

-200...+700 0C

Ni100

-50...+170 0C

Connection

3- and 4-wire

Measuring current

0.3 mA

Accuracy

0.05% FS

Linearity

< 0.05 0C (-200...+700 0C), PT100

Thermocouples

Type E

-100...+900 0C, linearity < 0.2 0C, -50...+900 0C

Type J

-150...+900 0C, linearity < 0.2 0C, -50...+900 0C

Type K

-150...+1350 0C, linearity < 0.4 0C, -40...+1300 0C

Type L

-100...+900 0C, linearity < 0.4 0C, -50...+900 0C

Type T

-150...+400 0C, linearity < 0.2 0C, -150...+400 0C

Type N

0...1300 0C, linearity < 0.2 0C, 0...1300 0C

Type R

0...1700 0C, linearity < 0.3 0C, 400...1700 0C

Type S

0...1700 0C, linearity < 0.3 0C, 300...1700 0C

Type C (W5)

0...2200 0C, linearity < 0.3 0C, 400...2200 0C

Type D (W3)

0...2200 0C, linearity < 0.3 0C, 500...2200 0C

Type B

400...1700 0C, linearity < 0.3 0C, 400...1700 0C

Type G (W)

1000...2200 0C, linearity < 0.4 0C, 1000...1700 0C

Accuracy

0.1% of span

Compensation

0.05 0C/0C

Line resistance effect

< 100 W, no effect

TC cut protection

Upscale

mV-inputs

25, 55, 100, 1000, 2500 mV and 5 V

Accuracy

0.01 % of span > 100 mV, 0.02 % < 100 mV

Input resistance effect

no effect < 10 kW and < 100 mV, no effect < 1 MW and > 100 mV

User selectable scale multiplier for max. value

Potentiometer

0...5 kW, 2-wire connection, accuracy 0.05 % FS

Output

0...20 mA, 4...20 mA or 0...10 V, max. load 700 W, accuracy 0.05 % FS, scaling freely adjustable

Alarms

Total

Max. 4 alarm relays

H2000-REL2

2 change over relays, max. 230 V, 2 A

H2000-REL3

3 closing contacts max. 230 V, 2 A

H2000-I/O

4 I/O-ports max. 36 V, 100 mA

Hysteresis

0...100 %

Reset

Automatic or manual

Contact

Closing or opening, software selection

Alarm leds

Programmable funtions

Line resistance effect

< 100 W, no effect

Serial output

RS232 or RS485 (both in a same output card)

Functions

Only for reading measured values

Addresses

0...127

Number of units

31 units in same RS-loop

Baud rate

300, 600, 1200, 4800, 9600, 19200

Programming

Front panel keys (4)

Distances

RS232 - max, 10...20 m, RS485 - max. 1000 m

Special functions

Display hold

With optional card H2000-I/O, holds display value, output and alarm

Max / Min memory

as a standard

General

Input filter

Digital

A/D converter

16 bits (64000), uni- or bipolar

Temperature drift

0.0004 % / 0Cwith voltage input

Led indicators

Leds 1...4 for alarms, min/max - Leds

Display

6-digit bright red LED, digit height 14.5 mm

Front protection

IP 65, with gasket

Weight

240 g

 

Dimensions

 

Wiring