Crowcon TXgard Plus

Code: TXgard Plus
  • Suitable for Hazardous areas
  • Sensors CO, H2S & O2
  • Intuitive display

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TXgard Plus is a Flameproof (Ex d), ATEX, IECEx and UL certified toxic and oxygen gas detector with LCD display and non-intrusive calibration. Uses an electrochemical sensor located in a 316 stainless steel flameproof housing. Complete with a marine-grade alloy junction box which contains an amplifier/transmitter to provide a 3-wire 4-20mA output.

A 3-digit LCD display with backlight and LED status indicator provide a user-interface, and calibration is performed using a magnetic wand (supplied). TXgard-Plus comprises four parts; 96HD sensor housing, junction box, amplifier and terminal board. The junction box is available with M20, 1/2″ or 3/4″ NPT cable entries.

Suitable for a variety of applications, including water treatment, oil and gas exploration, chemical plants and steel production.

Features

Non-intrusive calibration

  • Calibration can be performed locally without the need for hot work permits – minimises operational down-time.
  • Local display and buttons enable calibration without opening the junction box

Flexible output options

  • 4-20mA current sink or source – works with a wide selection of control panels
  • Three-wire format
  • Optional relays for alarm and fault – can be used for switching local alarmstxgard_plus_prod_img_2

Rugged and reliable

  • Constructed using marine-grade aluminium with a stainless steel sensor housing – proven track record for operation in the harshest environments
  • Ingress protection to IP65 as standard
  • Operating temperature –10 to +55ºC (sensor dependant)

Low cost of ownership

  • Non-intrusive one-person calibration – easy to operate and maintain
  • Long-life sensors – keep interruption to on-site activity to a minimum
  • Simple parts replacement

txgard_plus_prod_img_3

Sensor choice

  • Carbon Monoxide, Hydrogen Sulphide and Oxygen

Specifications

Size 200 x 115 x 115mm (7.9 x 6.1 x 6.1ins)
Weight 2.2kg (4.9lbs)
Ingress protection IP65
Enclosure material Junction box: Marine grade alloy
Sensor housing: 316 stainless steel
Power 10-30Vdc, 210mA max (relay version)
160mA max (non-relay)
Cable entries 2 x M20 or 1/2” NPT
Operating temperature -10°C to +55°C (-14°F to 131°F) *
Humidity 15 to 90% RH non-condensing
Relays (optional) SPNO or SPNC contacts rated
30Vdc 1A (non-inductive load) for Alarm 1, Alarm 2, Fault
Display 3-digit LCD back-lit display, LED status indicator
Calibration method Via magnetically operated buttons
Electrical output Three-wire 4-20mA, sink or source
Terminals Suitable for up to 1.5mm2 cable
Sensor type Electrochemical
Repeatability +/- 2% FSD typically
Zero drift +/- 2% FSD, six months typically
Response time Contact Crowcon for a full list of sensor response times
Performance Tested in accordance with EN60079-29-1
Hazardous area zones Zone 1 or 2
Approvals  Ex II 2 G
Ex db IIC T6 Tamb -20°C to +55°C
EMC compliance EN 50270, FCC: CFR 47 Part 15, ICES-003

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Title Size
TXgard-flamgard-plus-Datasheet 213 KB
TXgard-Plus-Manual-Issue-6 122 KB

Additional information

Weight 0.09 kg

Ordering Information

Analogue – No Relays available in different ranges, as stated
TXP/A/CO CO: 0-100, 250, 500 or 1,000ppm
TXP/A/H2S H2S: 0-15, 20, 25, 50, 100 or 200ppm
TXP/A/OX O2: 0-25% vol.
With Relays available in different ranges, as stated
TXP/R/CO CO: 0-100, 250, 500 or 1,000ppm
TXP/R/H2S H2S: 0-15, 20, 25, 50, 100 or 200ppm
TXP/R/OX O2: 0-25% vol.
No Sensor
TXP-0021 TXgard-Plus without detector – ATEX, M20 cable entries
TXP-0022 TXgard-Plus without detector supplied with relays – ATEX M20 cable entries
Common Part Numbers
TXP-0176 TXGARD-PLUS-M20 ATEX CERT-CO 0-100PPM-ANALOGUE
TXP-0165 TXGARD-PLUS-1/2 NPT-CO 0-100PPM-UL CERT-ANALOGUE
TXP-0207 TXGARD-PLUS-1/2 NPT-UL CERT-ANALOGUE-H2S 0-100PPM
TXP-0056 TXGARD-PLUS-M20 ATEX CERT-ANALOGUE-H2S 0-100PPM
OXP-0024 TXGARD-PLUS-OX 0-25%VV-ANALOGUE-UL-1/2 NPT
OXP-0033 TXGARD-PLUS-1/2 NPT-ATEX CERT-OX 0-25%VV-ANALOGUE
With Relays
TXP-0004 TXGARD-PLUS-CO-100PPM-RELAY-ATEX-M20
TXP-0119 TXGARD-PLUS-1/2 NPT-ATEX CERT-CO 0-250PPM-RELAY
TXP-0012 TXGARD-PLUS-CO-250PPM-RELAY-UL-1/2NPT
TXP-0203 TXGARD-PLUS-1/2 NPT-CO 0-250PPM-UL CERT-RELAY
TXP-0013 TXGARD-PLUS-CO-500PPM-RELAY-UL-1/2NPT
TXP-0128 TXGARD-PLUS-1/2 NPT-ATEX CERT-CO 0-500PPM-RELAY
TXP-0173 TXGARD-PLUS-M20-ATEX CERT-H2S 0-15ppm-RELAY
TXP-0009 TXGARD-PLUS-H2S-25PPM-RELAY-UL-1/2NPT
TXP-0124 TXGARD-PLUS-1/2 NPT-UL CERT-RELAY-H2S 0-100PPM
TXP-0174 TXGARD-PLUS-M20 ATEX CERT-H2S 0-200PPM -RELAY
OXP-0002 TXGARD-PLUS-OX-25.0%VV-RELAY-UL-1/2NPT
Accessories
C01052 Spray deflector. For outdoor installations & protection from water sprays.
C01442 Weatherproof cap
C01051 Collector cone.  For aiding detection of light gases such as methane.
C01254 Carbon cloth filter (self-adhesive). Removes long-chain hydrocarbons.
C01688 Stainless steel flow adapter for 96HD
C03005 Calibration adaptor
ATEX Certified Exd Cable Gland Adaptors.
M02125 M20 to ½” NPT (for standard Xgard, Exe or Exd Crowcon junction box)
M02281 M20 to ¾” NPT (for standard Xgard, Exe or Exd Crowcon junction box)
M02354 Exd/Exe certified brass cable glands. Pack of 2. M20 x 1.5mm thread, suitable for steel wire armoured cables with outside diameter 15.5mm to 21.1mm (inner sheath 6.7mm to 14mm). Certified ATEX II 2 GD, Exd IIC/Exe II. Certified to ATEX, IECEx, CSA, GOST-R and NEPSI standards.  IP66/67/68.

Spares

S01866 Toxic gas amplifier. Please specify gas and range.
S01867 Oxygen amplifier
S011182 Amplifier header: H2S 0-15ppm
S01855 Amplifier header: H2S 0-25ppm
S01856 Amplifier header: H2S 0-50ppm
S01977 Amplifier header: H2S 0-100ppm
S011156 Amplifier header: H2S 0-200ppm
S01857 Amplifier header: CO 0-100ppm
S01858 Amplifier header: CO 0-250ppm
S01859 Amplifier header: CO 0-500ppm
S011033 Amplifier header: CO 0-1000ppm
S01863/3 Amplifier header: O2 0-25%
S01891 TXgard Plus amplifier housing (includes mouldings, screws and labels, no PCB’s)
C01697 Crowmag
M040013 Junction box Lid O-Ring
S01846/3 Analogue terminal board
S01847 Relay terminal board

Complete 96HD with Toxic & Oxygen Sensors

S01751 96HD/CO detector (spare)
S01750 96HD/HS detector (spare)
S01753 96HD/OX detector (spare)
S01752 96HD/AM detector (spare)

Special

S012124 96HD H2S detector head, ATEX markings only (no UL markings)

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