18MS MSYSTEM | Alldatasheet
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Technical content
MODEL: 18MS 18MS SPECIFICATIONS ES-1816 Rev.7 Page 1/2 http://www.m-system.co.jp/ Rack-mounted DCS Signal Conditioners 18-RACK POTENTIOMETER CONVERTER Functions & Features
- Providing two DC outputs proportional to a potentiometer or slidewire position input
- Constant voltage excitation allows use with pots with total resistances from 100 Ω – 10 kΩ without affecting accuracy
- 50 % zero/span adjustments with minimal interaction
- Second channel output available at the front terminals and at the Standard Rack connector Typical Applications
- Tank levels
- Positions MODEL: 18MS–66–R
ORDERING INFORMATION
- Code number: 18MS-66-R INPUT POTENTIOMETER Total resistance 100 Ω – 10 kΩ OUTPUT 1 Voltage 6: 1 – 5 V DC (Load resistance 2000 Ω min.) OUTPUT 2 Voltage 6: 1 – 5 V DC (Load resistance 2000 Ω min.) POWER INPUT DC Power R: 24 V DC (Operational voltage range 24 V ±10 %, ripple 10 %p-p max.) GENERAL SPECIFICATIONS Construction: Rack-mounted; terminal access via screw terminals on the front and connector on the rear; terminal cover provided Connection Input: M3.5 screw terminals (torque 0.8 N·m) Output 1: Connector Output 2: M3.5 screw terminals (torque 0.8 N·m) and connector Power input: Supplied from connector Screw terminal: Nickel-plated steel Isolation: Input to output 1 to output 2 to power Overrange output: Approx. -10 to +120 % at 1 – 5 V Zero adjustment: 0 – 50 % of total resistance (front) Span adjustment: 50 – 100 % of total resistance (front) INPUT SPECIFICATIONS Minimum span: 50 % of total resistance Excitation: Approx. 0.2 V DC INSTALLATION Current consumption: Approx. 35 mA Operating temperature: -5 to +55°C (23 to 131°F) Operating humidity: 30 to 90 %RH (non-condensing) Mounting: Standard Rack 18BXx or 18KBXx Weight: 150 g (0.33 lb) PERFORMANCE in percentage of span Accuracy: ±0.1 % Temp. coefficient: ±0.015 %/°C (±0.008 %/°F) Response time: ≤ 0.5 sec. (0 – 90 %) Line voltage effect: ±0.1 % over voltage range Insulation resistance: ≥ 100 MΩ with 500 V DC Dielectric strength: 1500 V AC @ 1 minute (input to output 1 or output 2 or power)
500 V AC @ 1 minute
(output 1 to output 2 to power)
1500 V AC @ 1 minute
(input or output or power to ground)
MODEL: 18MS 18MS SPECIFICATIONS ES-1816 Rev.7 Page 2/2 http://www.m-system.co.jp/ EXTERNAL DIMENSIONS unit: mm (inch) 110 (4.33 ) 93 (3.66) 24 (.94) 7 (.28) 78 (3.07)32 (1.26) 8–M3.5 SCREW 7 (.28) 2–M3 SCREW TERMINAL ASSIGNMENTS 1 2 3 4 7 8 5 6 SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM Isolation Output Driver OUTPUT 2 SZ Output Driver CONNECTOR OUTPUT 2 OUTPUT 1 POWER SZ Voltage/ Duty Cycle Low Drift Amplifier POTENTIOMETER max. min. Excitation Volt. Generator Specifications are subject to change without notice.