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STX 2100 - Smart/HART® Differential Pressure Transmitter

Smart/HART® Differential Pressure Transmitter - STX 2100 Series

 

The STX 2100 Series Differential Pressure Transmitter complements the RTX 1000 Series, providing a complete family of Smart gauge, absolute and differential units.

 

The pressure transmitter utilizes a micromachined capacitance silicon sensor with state of the art microprocessor technology to provide exceptional performance and functionality.

STX 2100 Download

  • Accuracy upto 0.04%
  • Ranges from 1mbar to 32 bar
  • 100:1 rangeability
  • Line Pressure up to 160 bar
  • 2-wire 4-20mA with HART® protocol
  • Robust Design
  • Local zero and span adjustment

Functional Specifications

Type: FKC...5 Smart, 4 to 20mA DC + Hart® digital signal
Service Liquid, gas, or vapour
Pressure Ranges Static Pressures to 160 bar
Span from 1 mbar to 30 bar
Over Range Limit To maximum static pressure limit
Output Signal 4 to 20mA DC (linear or square root) with digital signal superimposed on the 4 to 20mA signal
Power Supply

Transmitter operates on 10.5V to 45V DC at transmitter terminals
10.5V to 32V DC for the units with optional arrester.

STX 2100 Series Graph

Hazardous locations

Authority (Digit 10= )Intrinsic safety
ATEX (K) Ex II 1 G
Ex ia IIC T5 (-40°C ≤ Ta ≤ +50 °C)
Ex ia IIC T4 (-40°C ≤ Ta ≤ +70 °C)
IP66/67
Entity Parameters:
Ui ≤ 28 Vdc, Ii ≤ 94.3 mA, Pi ≤ 0.66 W
Ci = 36 nF/26 nF for models with/without Arrester
Li = 0.7 mH/0.6 mH for models with/without Analog
Indicator

Authority (Digit 10= )Type n Nonincendive
ATEX (P) Ex II 3 G
Ex nA II T5 (-40°C ≤ Ta ≤ +70 °C)
IP66/67
Electrical ratings
Model without arrester:
Ui ≤ 45 Vdc, 4-20 mA loop powered, Pi ≤ 1.0125 W
Model with arrester:
Ui ≤ 32 Vdc, 4-20 mA loop powered, Pi ≤ 1.0125 W
Optional Analog indicator is not available for type “n”

Authority (Digit 10= )Flameproof
ATEX (X) Ex II 2 GD
Ex d IIC T6 (-40°C ≤ Ta ≤ +65 °C)
Ex d IIC T5 (-40°C ≤ Ta ≤ +85 °C)
Ex tD A21 IP66/67 T 85°C
Ex tD A21 IP66/67 T 100°C
Electrical ratings
Model without arrester:
Ui ≤ 45 Vdc, 4-20 mA loop powered, Pi ≤ 1.0125 W
Model with arrester:
Ui ≤ 32 Vdc, 4-20 mA loop powered, Pi ≤ 1.0125 W/td>

Zero/Span Adjustment Zero and span are adjustable externally from the adjustment screw (span adjustment is not available with 9th digit code “L, P, M, Q, S, N”).
Damping The time constant is adjustable between 0 to 32 seconds.
Zero Elevation/Suppression -100% to +100% of URL
Normal/Reverse Action Selectable
Indication Analog indicator or 5-digit LCD meter, as specified.
Burnout Direction

If self-diagnostic detects transmitter failure, the analog signal will be driven to either “Output Hold”, “Output Overscale” or “Output Underscale” modes.
“Output Hold”:
Output signal is held as the value just before failure happens.
“Output Overscale”:
Adjustable within the range 20.0mA to 22.5mA

“Output Underscale”:

Adjustable within the range 3.2mA to 4.0mA

STX 2100 Series Diagram

Output limits conforming to NAMUR NE43 by order.

Loop-check output Transmitter can be configured to provide a constant signal between 3.2mA and 22.5mA.
Temperature Limit Ambient: -40 to +85°C
(-20 to +80°C for LCD indicator)
(-40 to +60°C for arrester option)
(-10 to +60°C for fluorinated oil filled transmitters)
Ambient and process temperature restrictions apply to versions approved for use in hazardous locations.
Process: -40 to +120°C for silicone fill sensor -20 to +80°C for fluorinated oil fill sensor
Storage: -40 to +90°C
Humidity Limit 0 to 100% RH
Local Configurator with LCD display (Option) Local configurator with 3 push button and LCD display.
Programmable Output linearization Function Output signal can be characterized with “14 points linear approximation function”.

 

Reference conditions, silicone oil fill, 316L SS isolating diaphragms, 4 to 20mA analog output in linear mode.
Accuracy Rating (including linearity, hysteresis, and repeatability)
Max span above 320 mbar model: For spans greater than 1/10 of URL: ±0.065% of span or ±0.04% of span (optional) For spans below 1/10 of URL:
Max span 10 mbar, 60 mbar model: For spans greater than 1/10 of
URL: ±0.1% of span For spans below 1/10 of
URL: ( 0 .1 X U R L ) Span ± 0.05+0.05 % of span
Stability ±0.1% of upper range limit (URL) for 10 years for 6th digit code 3, 5, 6, 8.
Temperature Effect Effects per 28°C change between the limits of -40°C and +85°C

Range code (6th digit in Code symbols)Zero shiftTotal effect
“1”/10mbar
“2”/60mbar
±(0.125 + 0.1 * URL/Span )% ±( 0.15 + 0.1 * URL/Span)%
“3”/320mbar
“5”/1300mbar
“6”/5000mbar
“8”/30000mbar
±( 0.075 + 0.0125 * URL/Span)% ±( 0.095 + 0.0125 * URL/Span)%

Double the effects for material code (7th digit in codes symbols) “H”, “M”, “T”, “B”, “L” and “U”

Static pressure effect
Static pressure code (5th digit in Code symbols) Zero shift (% of URL)
“1”/10mbar sensor
“2”/60mbar sensor
±0.2%/2bar
±0.2%/32bar
“2”
“3”
“4”
±0.035%/69 bar

Double the effects for material code (7th digit in codes symbols) “H”, “M”, “T”, “B”, “L” and “U”

Overrange effect
Static pressure code (5th digit in Code symbols) Zero shift (% of URL)
“1”/10mbar sensor
“2”/60mbar sensor
“2”
“3”
“3”
±0.3% /2bar
±0.1% /32bar
±0.1% /100bar
±0.1% /160bar FKC35,36,38
±0.15% /160bar FKC33

Double the effects for material code (7th digit in codes symbols) “H”, “M”, “T”, “B”, “L” and “U”

Supply Voltage Effect Less than 0.005% of calibrated span per 1V
Update Rate 60 msec

Response Time
(at 63.2% of output signal)

Range code
(6th digit in code symbols)
Time constant (at 23°C)Dead time
“1” 0.33 s 0.12 s
“2” 0.3 s
“3“ 0.12 s
“5” through “8” 0.08 s
Response time = time constant + dead time
Mounting Position Effect Zero shift, less than 1.2 mbar for a 10° tilt in any plane.
No effect on span.
This error can be corrected by adjusting Zero.
Vibration Effect > ±0,25% of span for spans greater than 1/10 of URL.
Frequency 10 to 150Hz, acceleration 39.2m/sec2 .
Dielectric Strength 500V AC, 50/60Hz 1 min., between circuit and earth.
Insulation Resistance More than 100MΩ at 500V DC.
Internal Resistance for External Field Indicator 12Ω max. (connected to test terminal CK+ and CK-)

Performance Specifications for Square Root Output

Accuracy rating Output Span
OutputSpan
 over 0.1 × URLbelow 0.1 × URL
50 to 100% ±0.065 % ±(0.015+0.05 × 0.1 × URL/Span)%
20 to 50% ±0.163 % ±2.5 × (0.015+0.05 × 0.1 × URL/Span)%
10 to 20% ±0.325 % ±5 × (0.015+0.05 × 0.1 × URL/Span)%
Max span 10mbar, 60mbar model
OutputAccuracy
50 to 100% ±0.1 %
20 to 50% ±0.25%
10 to 20% ±0.5 %
Temperature Effect Effects per 28°C change between the limits of -40°C and +85°C
Range codeShift at 20% output point
“1” and “2” ±( 0 .3 7 5 + 0 .2 5 *URL/Span)%/28°C
“3” through “9” ± ( 0.24 +0.03125 *URL/Span) %/28°C
Low Flow Cut-off Customer configurable for any point between 0 to 20% of output

Physical Specifications

Electrical Connections 1/2-14 NPT, Pg13.5 or M20×1.5
Process Connections 1/4-18 NPT on 54mm centers, as specified.
Meets DIN 19213.
option: 1/2NPT for oval flanges

Process-wetted parts material
Material code (7th digit in Code symbols)Process coverDiaphragmWetted sensor bodyVent/drain
V 316L SS(*1) 316L SS 316 SS 316 SS
W 316L SS(*1) Hastelloy-C 316 SS 316 SS
H 316L SS(*1) Hastelloy-C

Hastelloy-C

lining

316 SS
J 316L SS(*1) 316L SS + Gold coating 316SS 316 SS
M 316L SS(*1) Monel Monel lining 316 SS
T 316L SS(*1) Tantalum

Tantalum

lining

316 SS
B

Hastelloy-C

lining

Hastelloy-C

Hastelloy-C

lining

Hastelloy-C

lining

L

Monel

lining

Monel

Monel

lining

Monel
U Tantalum lining Tantalum Tantalum
lining
Hastelloy-C

Notes: *(1) ASTM CF8M

Remark: Sensor gasket: Viton o-ring or PTFE square section gasket. Availability of above material design depends on ranges and static pressure. Refer to “Code symbols”.

Non-Wetted Parts Material Electronics housing:
Low copper die-cast aluminum alloy finished with
polyester coating (standard), or 316 stainless steel, as
specified.
Bolts and nuts:
• Cr-Mo alloy (standard) up to 160 bar,
316 stainless steel for static pressure up to 100 bar max.
SS630 or SS660 for static pressure > 100 bar.
Fill fluid:
Silicone oil (standard) or fluorinated oil
Mounting bracket:
304 stainless steel
Environmental Protection IEC IP67 and NEMA 6/6P
Mounting Without mounting bracket: direct mounting on manifold
(optional)
With optional mounting bracket: for 50mm (2”) pipe or
direct wall mounting.
Mass {Weight} Transmitter approximately 3.1 to 3.6kg without options.
Add; 0.5kg for mounting bracket
4.5kg for stainless steel housing (option)

Optional Features

Indicator

A plug-in analog indicator (2.5% accuracy).

An optional 5-digit LCD meter with engineering unit is also available.

Local Configurator with LCD Display An optional 5 digits LCD meter with 3 push buttons
Arrester An optional 5-digit LCD meter with engineering unit is also available.
Oxygen Service Special cleaning procedures are followed throughout the process to maintain all process wetted parts oil free.
The fill fluid is fluorinated oil.
Chlorine Service The fill fluid is fluorinated oil.
Degreasing Process-wetted parts are cleaned, but the fill fluid is standard silicone oil. Not for use on oxygen or chlorine measurement.
NACE Specification Metallic materials for all pressure boundary parts comply with NACE MR-01-75. 630/304 or 660/660 stainless steel bolts and nuts comply with NACE.
Optional Tag Plate An extra stainless steel tag with customer tag data is wired to the transmitter.
Vacuum Service

Special silicone oil and filling procedure are applied.

STX 2100 Series Spec Diagram

Code Symbols STX 2100

STX 2100 Series Code Symbols

 

STX 2100 Series Code Symbols

Notes*:
1. Not Used
2. Turn down of 100 : 1 is possible, but it should be used at a span greater than 1/40 of the maximum span for better performance.
3. Max. static pressure 100 bar for SS 316 bolts/nuts; for static pressure > 100 bar, please specify SS 630 or SS 660 bolts
4. Gold coating on wetted measuring cell parts for Hydrogen service - Hydroseal version - gold/ceramic coating is available upon request.
5. Process cover with lining has only side vent-drain facility
6. Process cover with PVDF insert with 1/2-18 NPT side process connection/ no vent drain, other upon request - square section PTFE gasket
7. When no code can be found in the current code symbols, place* in concerned code digit(s) and add* in 16th digit
8. Our stainless steel bolts/nuts in SS630 and SS660 are in conformity with the NACE requirements and must be used for NACE service
9. Not Used
10. Process connection on the bottom side.
11. Not Used
12. Pressure > 160 bar not used
13. SS660 bolts/nuts have to be used for oil & gas applications


Descriptions English
Smart/HART® Differential Pressure Transmitter - STX 2100 Series Smart/HART® Differential Pressure Transmitter - STX 2100 Series


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