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APM-1 Transmitter/Controller
Brand: KOBOLD Instruments, Inc
The KOBOLD compact transmitter / controller APM-1 measures and controls the pH value or redox potential in aqueous solutions. It is available as panel-mounted device according to DIN/EN 61554 or as field housing. Measured values and parameters are displayed on a high contrast graphic display in plain text.
Easy configuration via buttons or PC with optional software provide a simple and user friendly operation. An integrated math and logic module enables the integration of the measured values in mathematical formulas so that the measured variables can be displayed.
The transmitter has two Analog and two binary inputs. The two control relays can be used as limit value or two position, three position, three position controller or continuous controller with P-, PI-, PD- or PID action.
The modular units can be retrofitted with 3 plug-in boards and so be upgraded flexibly for different measuring and control task.
Specifications
Accuracy
- ± 5 ohms
- ≤ 0.05 % (Resistance ± 4 ohms)
- ≤ 0.3 % of Measuring Range
- ≤ 0.5 %
- ≤ 1.5 % - of Measuring Range
- 0.25 % of Measuring Range
Ambient Temperature Range
- -10° to 150° C (15° to 300° F)
- -5° to 50° C (23° to 122° F) - Field Housing
- -5° to 55° C (23° to 131° F) - Panel Mounting
Circuit Protection
- Varistor
Communication
- Baud Rate: 9,600, 19,200, 38,400 bit/sec
- RS-422, RS-485 Modbus, Modbus Integer Communication Protocol
- RS-485 with Data Logger - Optional
Consumption
- 13 VA, Max.
Display
- 122 x 32 Pixel LCD Graphic Display with Clue Backlight
Electrical Connectors
- Changeover Contact
- Screw Terminal
Electrical Rating
- 1 A at 240 Vac
- 3 A at 240 Vac Resistive Load
- 5 A at 240 Vac - Resistive Load
- 8 A at 240 Vac Resistive Load
Enclosure, Body Material
- Aluminum
- Plastic - for Panel Mounting
Environmental Protection
- IP20 (Rear) - Field Housing
- IP65 (Front) - Installation Housing
Humidity
- ≤ 90 % Relative Humidity, Annual Mean
- Non-Condensing
Input
- 0 (4) to 20 mA
- 0(2) to 10 V
- 0(4) to 20 mA
- 0-1 V
- 0-10 V
Loop Resistance
- ≤ 500 ohms - Load Resistance
- Input Resistance > 100 ohms
Mounting Position
- Horizontal
Output
- ± 5 Vdc, 5 mA
- 10 mA
- 2 Relay (Change over Contact)
- 5 A at 240 Vac Resistive Load
- Relay
Power Requirement
- 110-240 Vac
- 12 Vdc
- -15 / +10 %, 48 to 63 Hz - Standard
- 20-30 Vac/Vdc
- 48 to 63 Hz - Special
Storage Temperature
- -30° to 70° C (-22° to 158° F)
Supply Voltage
- 17 Vdc at 20 mA
- 25 Vdc Open Circuit Voltage Approximately
Temperature Effect
- 0.1 %/10 K Ambiet Temperatire Effect
- 0.2 %/10 K- Ambient Temperature Effect
- 100 ppm/K
Temperature Range
- -50° to 250° C (-58° to 482° F)
Voltage Drop
- ≤ 1.5 V
