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Newport Temperature Transmitters

MTX Miniature Temperature Transmitters   ---

  • Two-Wire Design 
  • 4-20 mADC Output 
  • ±0.1% Accuracy 
  • Upscale Break Protection 
  • Non-Isolated 
  • Mountable in any Standard Protection Head 
  • Accepts J, K, T, E Thermocouple or 100(omega) Platinum RTD Inputs 
  • Special factory scaling ($25) 
  • Comes with complete operator's manual. 
  • Zero and Span Adjustment Range: ±25% for °F and ±10% for °C 
  • Operating Temperature Range: -40 to 85°C (-40 to 185°F) 
  • Supply Voltage: 8-50 VDC 
  • Dimensions: 44.5 mm diameter x 31.75 mm tall (1.75" by 1.25") 
  • Weight: 34 g (less than 0.5 oz)
MODEL MTX
Model No.
MINIATURE THERMOCOUPLE TEMPERATURE TRANSMITTERS
MTX
MTX series transmitters convert thermocouple or RTD signals into a 4-20 mAdc signal output that is directly referenced to the mV input. The MTX transmitters mount directly within any of NEWPORT’s standard protection heads for connection to your sensor.
OPTIONS
DESCRIPTION
THERMOCOUPLE TYPE
J
Type J, Iron-Constantan
K
Type K, Chromel-Alumel
T
Type T, Copper-Constantan (ranges 05 and 10 excluded)
E
Type E, Chromel-Constantan
P
RTD Pt100, alpha 0.00385
ADD-ON OPTIONS
FS
Special factory scaling

RANGE

-
THERMOCOUPLE
RTD
-
THERMOCOUPLE
RTD
01
0 to 200°F
-40 to 140°F
06
0 to 100°C
0 to 1000°F
02
0 to 300°F
0 to 200°F
07
0 to 150°C
0 to 100°C
03
0 to 500°F
0 to 300°F
08
0 to 250°C
0 to 150°C
04
0 to 750°F
0 to 500°F
09
0 to 400°C
0 to 250°C
05
0 to 1000°F J,K,E only
0 to 750°F
10
0 to 500°C J,K,E only
0 to 400°C


500 Series Isolated 2-Wire 4-20mATransmitters  ---

  • Isolated to 1500 VRMS 
  • 9-50 V compliance 
  • Turndown ratio to 10:1 
  • NMV protection to 120 VAC 
  • -40 to +85°C operation 
  • Shock resistance to 55 g 
  • NEMA-4X metal case 
  • Field scalable 
  • Input Type: J, K or T 

500 Series Isolated 4-20 mA Transmitters
COMMON SPECIFICATIONS - ALL MODELS
SIGNAL OUTPUT
Connection: 2-wire
Linear Range: 4-20 mA
Maximum Output: 35 mA
Voltage Compliance: 9-50 Vdc
Power Supply Rejection: 0.01% of span/volt

INPUT/OUTPUT PROTECTION
CMV, Input to Case or Output: 2100 Vp per HV test, 354 Vp per IEC spacing
CMR, Input to Case or Output: 120 dB, DC to 60 Hz
NMV Across Output Leads: 120 Vac for 1 min
Reverse Polarity Across Output Leads: 400 Vp

ACCURACY, -40°C to +85°C
Hysteresis & Repeatability: ±0.1% of span 6-month
Stability Error: ±0.2% of zero suppression
Error Due to 50°C Change in Transmitter Temperature: Zero Error: ±0.2% of zero suppression Span Error: ±0.2% of span

ENVIRONMENTAL
Operating temperature: -40 to +85°C (-40 to +185°F)
Storage Temperature: -55 to +125°C (-67 to +257°F)
Relative Humidity: 0 to 100% (sealed case)
Watertight Proof Pressure: 35 kPa (5 PSI) Shock: 55 g, half sine, 9-13 ms duration
Vibration: 1.52 mm (0.06 in) double amplitude, 10-80 Hz cycled

MECHANICAL
Case Material: Zamak® zinc alloy
Gasket Material: Fluorosilicone
Diameter: 74 mm (2.9 in)
Height, Including Barriers: 53 mm (2.1")
Weight: 380 g (13 oz)
Electrical Connection: #6 screws with wire clamps
Terminal Protection: Standard: Screw terminal barriers plus barrier strip cover CPB1 (Optional): Plastic cover for case top (protects T/C screw terminals from air currents)

NON-COMMON SPECIFICATIONS

RTD INPUT - MODEL 501
Signal Source: Pt 100 RTD
Span for 4-20 mA Output: 100 to 1050°C (180 to 1890°F)
Zero Suppression: -200 to +750°C (-328 to +1382°F)
Source Connection: 2- or 3-wire
Excitation Current: 200 µA
Lead Resistance, Max: 100 ohm
Bandwidth: DC-60 Hz

OHMS INPUT MODEL 501
Signal Source: 0-400 ohm
Span for 4-20 mA Output: 35 to 400 ohm
Zero Suppression: 0 to 365 ohm
Source Connection: 2- or 3-wire
Excitation Current: 200 µA
Lead Resistance, Max: 100 ohm
Bandwidth: DC-60 Hz

THERMOCOUPLE INPUT MODEL 502A
Span and Zero Suppression: See input table
Input Resistance (Open T/C Detector Resistance): 5 M ohm
Bias Current, Max: 50 nA
NMV Across Input Leads: 120 Vac for 1 min
NMR Across Input Leads: 40 dB, 50/60 Hz, 100 mV input
Thermocouple Lead Resistance: For specified performance: 100 ohm Maximum: 10 kohm
Step Response, Type: 400 ms

MILLIVOLT INPUT MODEL 504
Span for 4-20 mA Output: 5 to 100 mV
Zero Suppression: -30 to +60 mV
Input Resistance: 100 M ohm
Bias Current, Max: 50 nA NMV
Across Input Leads: 120 Vac for 1 min
NMR Across Input Leads: 40 dB, 50/60 Hz, 100 mV input
Step Response, Type: 400 ms

MILLIAMP INPUT MODEL 505
Span for 4-20 mA Output: 5 to 100 mA
Zero Suppression: -30 to +60 mA
Input Resistance: 1 ohm
Step Response, Type: 400 ms

VOLT INPUT MODEL 506
Span for 4-20 mA Output: 0.5 to 5 V (506-1); 5 to 50 V (506-2)
Zero Suppression: -3.5 to +6.0 V (506-1); -35 to +60 V (506-2)
Input Resistance: 1 M ohm Bias Current, Max: 1 nA
NMV Across Input Leads: 120 Vac for 1 min
NMR Across Input Leads: 40 dB, 50/60 Hz, 100 mV input
Step Response, Type: 400 ms

Quick Selection Guide by Input Type
Model 
Signal Type
Zero Suppression* for 4 mA Output
Maximum Signal* for 20 mA Output
Signal Span* for 20 mA Output
Input Impedance
501
RTD
Pt 100
Ohms 
-200 to +750°C
-328 to +1382°F
0 to 365 ohm
+850°C
+1562°F
400 ohm
100 to 1050°C
180 to 1890°F
35 to 400 ohm
N/A
502A-J
Type J T/C
Iron Constantan
-50 to +660°C
-58 to +1220°F
+760°C
+1400°F
100 to 810°C
180 to 1458°F
5 Mohm 
502A-K
Type K T/C
Chromel Alumel
-50 to +1272°C
-58 to +2322°F
+1372°C
+2502°F
100 to 1422°C
180 to 2560°F
5 Mohm
502A-T
Type T T/C
Copper Constantan
-50 to +350°C
-58 to +662°F
+400°C
+752°F
50 to 450°C
90 to 810°F
5 Mohm
502A-E
Type E T/C
Chromel Constantan
-50 to +900°C
-58 to +1652°F
+1000°C
+1832°F
100 to 1050°C
180 to 1890°F
5 Mohm
504
Millivolts
-30 to +60 mV
+160 mV 
5 to 100 mV
100 Mohm
505
Milliamps 
-30 to +60 mA
+160 mA
5 to 100 mA
1 ohm
506-1
Low Volts
-3.5 to +6.0 V
+11 V
0.5 to 5 V
1 Mohm
506-2
High Volts
-35 to +60 V
+110 V
5 to 50 V
1 Mohm
508B
Companion Product to 500 Series Transmitters
*The signal span shown in column 5 for 4-20 mA output cannot include inputs below the maximum signal in column 4.


Powering the 4-20 mA Loop and the Transmitter with an INFINITY® Panel Meter/Controller
INFINITY INFCP or INFP digital panel meter w/excitation supply

To Order (Specify Model No.) Prices Shown in U.S. Dollars
Model # 
Description
501
RTD (Pt100) or ohms (default cal. 0-850°C)
502A-J
Type J thermocouple (default cal. 0-500°C)
502A-K
Type K thermocouple (default cal. 0-800°C)
502A-T
Type T thermocouple (default cal. 0-400°C)
502A-E
Type E thermocouple (default cal. 0-500°C)
504
Millivolt input 5 to 100 mV span (scalable)
505
Current input (scalable) loop isolator
506-1
500 mV to 5 Vdc input span 
506-2
5 V to 50 Vdc input span
508B
Companion Product to 500 Series Transmitters
508B
508B A 3 1/2 digit (±1.999 count) loop-powered indicator with an LCD display and a jumper-selectable dummy right-hand zero for display to ±19.990. An ideal companion product to 500 Series transmitters, with the same hockey-puck case and rugged environmental specs. FM and CENELEC intrinsic safety certification are available as an option.

OPTIONS AND ACCESSORIES
Option 
Description
-FS
Custom scaling. Specify input signals corresponding to 4 and 20 mA
DS
Downscale overrange (under 4 mA)
CBP1
Plastic cover for screw-terminal barrier strip
MAT1
Adaptor plate, surface or 2.75", (69.9 mm) relay track 
MDT1
DIN rail clamp
EPH1
External single-height environmental enclosure, NEMA-7 and NEMA-4 rated, with FM and CENELEC EEx d II C certification. Includes MXS1 spring retainers. 
EWP2
External double-height environmental enclosure, with window for 500 Series transmitter on bottom and one 508B loop-powered indicator on top. NEMA-7 and NEMA-4 rated with FM and CENELEC EEx d II C certification. Includes MXS2 spring retainers.
MXS1
Replacement spring retainers for EPH1 or customer-supplied explosion-proof housing 
MXS2
Replacement spring retainers for EPW2 or customer-supplied explosion-proof housing

Ordering Example:
1.) 504-FS (-1 to 30 mV = 4 to 20 mA)
2.) 504 (customer will calibrate for 0 to 50 mVdc = 4 to 20 mA)


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