ES-2915 Rev.1
17RK
Rack-mounted Power Transducers 17-RACK
RTD CONVERTER
(fast response)
Functions & Features
• Accepting direct input from an RTD and providing a standard process signal
• Linearization
• Burnout protection
• "Active bridge" circuit containing two constant current sources allows leadwire resistances up to 20 Ω
Typical Applications
• Converting into a standard signal
• Combination with intrinsic safety barriers
MODEL: 17RK–[1]6–R[2]
ORDERING INFORMATION
• Code number: 17RK-[1]6-R[2]
Specify a code from below for each of [1] and [2].
(e.g. 17RK-16-R/BL)
• Temperature range (e.g. 0 – 100°C)
[1] INPUT RTD (2- or 3-wire)
1
: JPt 100 (JIS'89)
(Usable range: -200 to +500°C, -328 to +932°F; min.span: 30°C, 54°F)
3
: Pt 100 (JIS'89)
(Usable range: -200 to +650°C, -328 to +1202°F; min.span: 30°C, 54°F)
4
: Pt 100 (JIS'97, IEC)
(Usable range: -200 to +650°C, -328 to +1202°F; min.span: 30°C, 54°F)
5
: Pt 50 Ω (JIS'81)
(Usable range: -200 to +500°C, -328 to +932°F; min.span: 60°C, 108°F)
6
: Ni 508.4 Ω
(Usable range: -50 to +200°C, -58 to +392°F; min.span: 20°C, 36°F)
0
: Specify
Note: Consult us for 2-wire RTD
OUTPUT
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.)
[2] OPTIONS
Burnout
blank
: Upscale burnout
/BL
: Downscale burnout
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
: Connector
Power input
: Supplied from connector
Screw terminal
: Nickel-plated steel
Isolation
: Input to output to power
Zero adjustment
: -5 to +5 % (front)
Span adjustment
: 95 to 105 % (front)
Linearization
: Standard
INPUT SPECIFICATIONS
Maximum leadwire resistance
: 20 Ω per wire (3-wire)
Sensing current
: 2 mA
INSTALLATION
Current consumption
: Approx. 35 mA
Operating temperature
: -5 to +55°C (23 to 131°F)
Operating humidity
: 40 to 85 % RH (non-condensing)
Mounting
: Standard Rack 17BXE
Weight
: 150 g (0.33 lb)
PERFORMANCE in percentage of span
Accuracy
: ±0.3 %
Temp. coefficient
: ±0.015 %/°C (±0.008 %/°F)
Response time
: Approx. 25 msec. (0 – 90 %)
Burnout response
: ≤ 10 sec.
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 or power)
500 V AC @ 1 minute (outut to power)
1500 V AC @ 1 minute (input or output or power to ground)
DIMENSIONS unit: mm (inch)
TERMINAL ASSIGNMENTS
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM