ES-4266 Rev.9
26RS
Head-mounted Two-wire Signal Conditioners
26-UNIT
RTD TRANSMITTER
(isolated)
Functions & Features
• Accepts direct input from an RTD and provides a standard 4 – 20 mA DC signal
• Linearization and burnout
• Wide operating temperature range suitable for harsh environments
Typical Applications
• Mounting in a sensor connection head minimizes noise effect and signal degradation
MODEL: 26RS–[1][2]
ORDERING INFORMATION
• Code number: 26RS-[1][2]
Specify a code from below for each of [1] and [2].
(e.g. 26RS-4/K/BL)
• Temperature range (e.g. 0 – 100°C)
[1] INPUT RTD (2- or 3-wire)
1
: JPt 100 (JIS ’89)
(Usable range: -100 to +500°C, -148 to +932°F, min.span: 50°C, 90°F)
3
: Pt 100 (JIS ’89)
(Usable range: -100 to +650°C, -148 to +1202°F, min.span: 50°C, 90°F)
4
: Pt 100 (JIS ’97, IEC)
(Usable range: -100 to +850°C, -148 to +1562°F, min.span: 50°C, 90°F)
5
: Pt 50Ω (JIS ’81)
(Usable range: -100 to +500°C, -148 to +932°F, min.span: 100°C, 180°F)
6
: Ni 508.4 Ω
(Usable range: -50 to +200°C, -58 to +392°F; min.span: 30°C, 54°F)
Note: Consult us for 2-wire RTD
[2] OPTIONS (multiple selections)
Response Time (0 – 90 %)
blank
: Standard (≤ 0.5 sec.)
/K
: Fast Response (Approx. 25 msec.)
Burnout
blank
: Upscale burnout
/BL
: Downscale burnout
GENERAL SPECIFICATIONS
Construction
: Sensor head-mounting
Connection
: Euro type terminal
Applicable wire size:
0.14 – 1.5 mm
2
, stripped length 6 mm
Housing material
: Flame-resistant resin (black)
Isolation
: Input to output
Zero adjustment
: -1 to +1 % (front)
Span adjustment
: 99 to 101 % (front)
Linearization
: Standard
INPUT SPECIFICATIONS
Maximum leadwire resistance
: 20 Ω per wire (3-wire)
Sensing current
: 0.7 mA (Pt); 0.35 mA (Ni 508.4 Ω)
OUTPUT SPECIFICATIONS
Output
: 4 – 20 mA DC
Load resistance vs. supply voltage:
Load Resistance (Ω) = (Supply Voltage (V) – 12 (V)) ÷ 0.02 (A) (including leadwire resistance)
INSTALLATION
Supply voltage
: 12 – 32 V DC
Operating temperature:
-40 to +85°C (-40 to +185°F)
Operating humidity
: 0 to 90 %RH (non-condensing)
Mounting:
Head-mounting (DIN type B head)
Weight
: 20 g (0.71 oz)
PERFORMANCE in percentage of span
Accuracy
: ±0.2 %
Temp. coefficient
: ±0.02 %/°C (±0.01 %/°F)
Burnout response
: ≤ 10 sec.
Insulation resistance
: ≥ 100 MΩ with 500 V DC
Dielectric strength
: 2000 V AC @1 minute
(input to output to ground)
STANDARDS & APPROVALS
EU conformity
:
EMC Directive
EMI EN 61000-6-4
EMS EN 61000-6-2
RoHS Directive
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]
MOUNTING REQUIREMENTS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM