NIVELCO MicroTREK HT-700 User manual

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LEVEL MEASUREMENT TECHNICAL CONCEPTS

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Certificates
Reference document number
ATEX, Certificate No.: BKI22ATEX0003 X htk701hu21p02-b
IECEx, Certificate No.: htk701en21p01-b

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CONTENTS
1.INTRODUCTION........................................................................................6
2.ORDER CODES.........................................................................................7
2.1. MicroTREK H–700 with cable probe..........................................7
2.2. MicroTREK H–700 with rod probe.............................................8
2.3. MicroTREK H–700 with rod or coaxial.......................................9
3.TECHNICAL DATA..................................................................................10
3.1. General ....................................................................................10
3.2. Probe properties ......................................................................11
3.3. Coated probe properties ..........................................................12
3.4. Dimensions ..............................................................................13
3.5. Explosion Protection, Designation, Limit Values .....................14
3.5.1.ATEX Intrinsically safe protection (Ex ia) .................................14
3.5.2.Temperature limit data for Ex iamodels....................................14
3.5.3.ATEX combustible dust protection (Ex t)..................................15
3.5.4.Temperature limit data for Ex t models: ...................................16
3.5.5.IECEx Intrinsically safe protection (Ex ia) ................................17
3.5.6.Temperature limit data for Ex ia models...................................17
3.5.7.IECEx combustible dust protection (Ex t).................................18
3.5.8.Temperature limit data for Ex t models ....................................19
3.6. Accessories..............................................................................19
3.7. Conditions for Safe Use...........................................................20
3.8. Maintenance and Repair..........................................................20
4.INSTALLING ........................................................................................... 21
4.1. Handling and Storage.............................................................. 21
4.2. Mounting on Containers .......................................................... 22
4.2.1.General mounting instructions ................................................. 22
4.2.2.Installing the Device for Measuring Solids............................... 25
4.3. Wiring ...................................................................................... 26
4.3.1.BUS (HART®) communication ................................................. 28
4.4. Switching On and Commissioning .......................................... 28
4.5. Available User Interfaces ........................................................ 28
5.PROGRAMMING..................................................................................... 29
5.1. Programming with EView2 ..................................................... 29
5.1.1.Installing and Running EView2 ............................................... 29
5.1.2.Programming and Configuring the Device ............................... 29
5.1.3.Programming Example 1 (Using EView2 ):.............................. 40
5.2. Programming with the SAP−300 Display Unit......................... 42
5.2.1.SAP–300 Display Unit.............................................................. 42
5.2.2.The Behavior of the MicroTREK while Programmed Manually 43
5.3. Properties of MicroTREK Microwave Level Transmitter ......... 45
5.3.1.Level Measurement – Level reflection, Threshold Line and
Automatic Gain Adjustment............................................................... 45
5.3.2.To illustrate the five possible configurations, the following fluid
level measurement settings are assumed ........................................ 46
5.3.3.Echo Loss Handling ................................................................. 46
5.3.4.Typical Signal Forms................................................................ 50
5.4. Troubleshooting....................................................................... 51

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Thank you for choosing a NIVELCO instrument.
1. INTRODUCTION
Application
The MicroTREK 2-wire guided microwave level transmitter measures the distance to the surface of liquids, solids, and granules, from which the device calculates and
transmits the level, volume, or mass values as required.
The device can be used in storage and reaction tanks, rigid pipelines of suitable diameter, and level reference vessels. The device can also be used with HART®
compliant EView2, PACTware, and MultiCONT universal process controller.
Operating Principle
The MicroTREK 2-wire guided-microwave level transmitter measurement method is based on TDR (Time Domain Reflectometry) analysis of the electromagnetic pulse
traveling along the probe. The device sends nanosecond-wide, low-power pulses along an electrically conductive rod, cable, or coaxial supply line at a known rate of
light propagation speed. If the electromagnetic pulse propagating along the conductor reaches a medium boundary with a different (εr) dielectric constant (the surface
of the measured medium or the phase boundary of two liquids), some of the energy is reflected from there. The larger and sharper the (εr) dielectric constant change
at the boundary of the media, the better the efficiency of the reflection (e.g., 80% of the energy is reflected from a flat air-water boundary) is.
The pulse is detected and processed by the device as a voltage signal. Since the propagation speed is known, the distance of the reflecting surface can be determined
by measuring the travel time of the pulse. The travel time is the time between the start of the pulse and the arrival of the reflected pulse, and the distance traveled is
twice the distance to and from the target. The device calculates the distance from the measured time into an electric signal proportional to the distance, an output
current of 4…20 mA, and provides a HARToutput signal and displays it on the display. Other derived quantities (volume, weight, etc.) can also be obtained from the
distance data using the device software. The advantage of the described measurement technology compared to other level measurement methods is that the dust,
foam, steam, boiling, and surface turbulence have no disturbing effect.

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2. ORDER CODES (NOT ALL COMBINATIONS POSSIBLE!)
2.1. MICROTREK H–700 –WITH CABLE PROBE
MicroTREK
H
-
-
Ex*
**
Type Code Probe / Process connection Code Housing Code
Probe
length
(5)
Code
Probe
length
(5)
Code Output Code
Transmitter (1)
T
Mono cable,
∅4 mm, 1.4401
1" BSP
K
Aluminum
(powder-
coated)
7
0 m
0
0 m
0
4…20 mA
+ HART®
4
Transmitter high-
temperature
(2)
H
1" NPT
L
10 m
1
0.1 m
1
+ HART® / Ex ta/tb IIIC
5
1½" BSP
V
20 m
2
0.2 m
2
(ATEX, IECEx)
Transmitter + display(1)
B
1½" NPT
W
Plastic,
fiberglass-
reinforced(4)
8
30 m
3
0.3 m
3
+ HART® / Ex ia IIIC
(ATEX, IECEx)
6
Transmitter high-
temperature + display(2)
P
1½" TriClamp
1
0.4 m
4
2" TriClamp
2
0.5 m
5
+ HART® / Ex ia IIC/IIB
(ATEX, IECEx)
8
Mono cable,
∅
8 mm, 1.4401
1½" BSP
N
Stainless
steel
9
0.6 m
6
1½" NPT
J
0,7 m
7
+ HART® / Ex ta IIIC
(ATEX, IECEx)
9
Twin cable, 2x
∅4 mm, 1.4401
1½" BSP
T
0.8 m
8
1½" NPT
U
0.9 m
9
+ HART® + Relay
H
Mono cable,
Ø4 mm, FEP-
coated (3)
1" BSP
F
1" NPT
G
* Ex versions are marked "Ex" right after the type designation on the label.
(1) Flange temperature max. +90 °C (+194 °F)
(2) Flange temp. max. +200 °C (+392 °F) (“M” type only up to +150 °C [+302 °F])
(3) Only the cable probe is coated
(4) Ex version not available
(5) Max 30 m (100 ft) probe length
TriClamp 1½"
X
Sanitary DN40
Y
Mono cable, Ø4 mm, + PFA/FEP
fully coated / DN50, PN25, 1.4571 +
PFA/FEP lining
M

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2.2. MICROTREK H–700 –WITH ROD PROBE
MicroTREK
H
–
–
Ex*
**
Type Code Probe / Process connection Code Housing Code
Probe
length (5) Code
Probe
length (5) Code
Output Code
Transmitter (1)
T
Mono rod,
∅8 mm, 1.4571
1" BSP
R
Aluminum
(powder-
coated)
7
0 m
0
0 m
0
4…20 mA
+ HART®
4
Transmitter high-
temperature
(2)
H
1" NPT
P
1 m
1
0.1 m
1
+ HART® / Ex ta/tb IIIC
5
1½" TriClamp
3
2 m
2
0.2 m
2
(ATEX, IECEx)
Transmitter + display(1)
B
Twin rod,
1.4571
1½" BSP
D
Plastic,
fiberglass-
reinforced
(4)
8
3 m
3
0.3 m
3
+ HART® / Ex ia IIIC
(ATEX, IECEx)
6
Transmitter high-
temperature + display
(2)
P
1½" NPT
E
0.4 m
4
Mono rod
PFA-coated
1½" TriClamp
PFA-coated
O
0.5 m
5
+ HART® / Ex ia IIC/IIB
(ATEX, IECEx)
8
Stainless
steel
9
0.6 m
6
DN50, PN25,
1.4571 flange,
PFA-coated
Q
0.7 m
7
+ HART® / Ex ta IIIC
(ATEX, IECEx)
9
0.8 m
8
* Ex versions are marked "Ex" right after the type
designation on the label.
(1) Flange temperature max. +90 °C (+194 °F)
(2) Flange temp. max. +200 °C (+392 °F)
(up to +150°C [+302 °F] with plastic-coated probes)
(3) High-temperature version not available
(4) Ex version not available
(5)
Max. 3 m (10 ft) probe length
0.9 m
9
+ HART®+ Relay
9
Mono rod + PP-coated / DN50,
PN25, 1.4571 + PP lining
(3)
I

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2.3. MICROTREK H–700 –WITH ROD OR COAXIAL
MicroTREK
H
–
–
Ex*
**
Type Code Probe / Process connection Code Housing Code
Probe
length (5) Code
Probe
length (5) Code
Output Code
Transmitter (1)
T
Mono rod (3),
∅14 mm, 1.4571
1½" BSP
S
Aluminum
(powder-
coated)
7
0 m
0
0 m
0
4…20 mA
+ HART®
4
Transmitter high-
temperature
(2)
H
1½" NPT
Z
1 m
1
0.1 m
1
+ HART® / Ex ta/tb IIIC
5
2" TriClamp
4
2 m
2
0.2 m
2
(ATEX, IECEx)
Transmitter + display(1)
B
Coaxial (3),
1.4571
1" BSP
A
Plastic,
fiberglass-
reinforced
(4)
8
3 m
3
0.3 m
3
+ HART® / Ex ia IIIC
(ATEX, IECEx)
6
Transmitter high-
temperature + display
(2)
P
1" NPT
B
4 m
4
0.4 m
4
1½" BSP
C
5 m
5
0.5 m
5
+ HART® / Ex ia IIC/IIB
(ATEX, IECEx)
8
1½" NPT
H
Stainless
steel
9
6 m
6
0.6 m
6
1½" TriClamp
5
0,7 m
7
+ HART® / Ex ta IIIC
(ATEX, IECEx)
9
2" TriClamp
6
0.8 m
8
0.9 m
9
+ HART®+ Relay
H
* Ex versions are marked "Ex" right after the type designation on the label.
(1) Flange temperature max. +90 °C (+194 °F)
(2) Flange temp. max. +200 °C (+392 °F)
(3) Can be ordered with segmented probe which must be specified in the text of the order. The length of the probe section is 1 m.
(4) Ex version not available
(5)
max. 6 m (20 ft) probe length
Accessories available
Order code
Graphic plug-in display module
SAP–300–0
HART®-USB modem
SAT–304–0
HART®-USB/Bluetooth®modem
SAT–504–
HART®-USB/RS485 modem
SAK–305–2
HART®-USB/RS485 modem / Ex ia G
SAK–305–6
Process connections (6)
DIN and ANSI flanges
MFT––
DN40 Pipe coupling (DIN 11851)
Special seals (6)
EPDM
FFKM
(6) The above process connections and special seals are ordered separately and must be specified in the text part of the order.

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3. TECHNICAL DATA
3.1. GENERAL
With plastic housing
H–8–4
With aluminum housing
H–7–4, 5, 6, 8
With stainless steel housing
H–9–4, 5, 6, 8
Input
data
Measured values
Distance between the reference point and the plane of the reflection (surface of the material); derived values: level, volume or weight
Measuring range
Depends on the probe and the measured medium (refer to technical data and probes table)
Probe types and technical data
Coaxial, dual cable, cable, dual rod, and rod probes (for technical data refer to the Technical Data of Probes table)
Housing
Plastic
Cast aluminum with epoxy finish
Stainless steel (KO35)
Process temperature
–30…+200 °C (–22…+392 °F) (for technical data refer to – MEDIUM TEMPERATURE table)
Process pressure
–1…40 bar (–0.1…4 MPa [–14…580 psig]) (for technical data refer to – MEDIUM PRESSURE DIAGRAM)
Ambient temperature
–30…+65 °C (–22…+149 °F), with display: –20…+65 °C (–4…+149 °F)
Seal
FPM (Viton

), for high temperatures, optional FFKM Perfluoroelastomer (Kalrez

6375), EPDM
Ingress protection
IP67
Supply voltage
12
(1)
…36 V DC, nominal 24 V DC, Ex version: 12
(1)
…30 V DC, transient overvoltage protection
(2)
Output
data
Output signal
Analog: 4…20 mA; (3.9…20.5 mA) passive output; error signal 3.8 or 22 mA
BUS: serial, HART

interface, termination resistor maximum 750 Ω
Display (optional): SAP–300 LCD dot-matrix
Relay (optional): closing and opening contact
Accuracy (3)
Liquids:
±
5 mm (
±
0.2"). If probe length is ≥ 10 m (L ≥ 33 ft);
±
0.05% of probe length
Solids:
±
20 mm (
±
0.8"). If probe length is ≥ 10 m (L ≥ 33 ft);
±
0.2% of probe length
Wiring
2× M20×1.5 cable glands, cable outer diameter: Ø6…Ø12 mm (Ø0.23…Ø0.47") (metal for Ex version, otherwise plastic) + 2× internally threaded
½" NPT connection for protective pipes, wire cross section: 0.5…1.5 mm
2
(AWG20…AWG15) (shielded cable recommended)
Electrical protection
Class III
Weight (housing)
1.3 kg (2.9 lbs)
2.2 kg (4.9 lbs)
3.9 kg (8.6 lbs)
(1) Reliable operation in industrial environments can be guaranteed for terminal voltages > 13 V.
(2) The device has been tested and complies with MSZ EN IEC 61326-1: 2021 Table 2. I/O signal/control with (e) remark, Surge test.
(3) With ideal reflective surfaces and constant temperatures.

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3.2. PROBE PROPERTIES
Type
H

K–

–

H

L–

–

H

V–

–

H

W–

–

H

R–

–

H

P–

–

H

S–

–

H

Z–

–

H

N–

–

H

J–

–

H

T–

–

H

U–

–

H

D–

–

H

E–

–

H

A–

–

H

B–

–

H

C–

–

H

H–

–

Version 4 mm cable
(0.15") Rod 8 mm cable (0.3")
4mm dual cable
(0.15") Dual rod Coaxial
Maximum measuring
range
30 m (100 ft) 3 m (10 ft) 6 m (20 ft) 30 m (100 ft) 3 m (10 ft) 6 m (20 ft)
Minimum measuring
range
εr
= 80 / 2.4
0.25 m / 0.35 m (0.82 ft / 1.15 ft) 0.15 m / 0.3 m (0.5 ft / 1 ft) 0 m (0 ft)
Min. distance to
objects
∅600 mm (Ø2 ft) ∅200 mm (Ø 0.65 ft) ∅0 mm (0 ft)
Minimum
εr
of medium
2.1
1.8
1.4
Process connection
1" BSP
1" BSP 1½" BSP
1" BSP
1" NPT
1" NPT
1½" BSP
1" NPT 1½" NPT
1½" BSP
1½" NPT
1½" NPT
Material of probe 1.4401 1.4571 1.4401 1.4571
Nominal diameter of
probe
4 mm (0.15") 8 mm (0.3") 14 mm (0.55") 8 mm (0.3") 4 mm (0.15") 8 mm (0.3") 28 mm (1.1")
Weight
0.12 kg/m
(0.08 lb/ft)
0.4 kg/m
(0.25 lb/ft)
1.2 kg/m
(0.8 lb/ft)
0.4 kg/m
(0.25 lb/ft)
0.24 kg/m
(0.16 lb/ft)
0.8 kg/m
(0.5 lb/ft)
1.3 kg/m
(0.85 lb/ft)
Separator material – PFA,
welded onto cable
PTFE-GF25
if length is
>1.5 m (5 ft)
PTFE,
if length is
>1.5 m (5 ft)
Tensioning weight
dimensions
Ø25 x 100 mm
(Ø1 x 4")
–
Ø40 x 260 mm
(Ø1.5 x 10")
Ø40 x 80 mm
(Ø1.5 x 3")
–
Material of tensioning
weight
1.4571 – 1.4571 1.4571 –

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3.3. COATED PROBE PROPERTIES
Type H

F–

–

H

G–

–

H

X–

–

H

Y–

–

H

M–

–

H

Q–

–

H

O–

–

H

I-

-

Version ∅4 mm (0.15") FEP-coated cable
∅4 mm (0.15")
fully FEP / PFA-
coated cable
Fully PFA-coated rod Fully PP-coated
rod
Maximum measuring range
30 m (100 ft)
3 m (10 ft)
Minimal measuring range εr = 80 / 2.4 0.25 m / 0.35 m (0.82 ft / 1.15 ft)
Free space requirement
∅
600 mm (Ø2 ft)
Minimal
εr
of medium
2.1
Process connection 1" BSP / 1" NPT 1½" TriClamp DN 40 Milch DN 50 1½" TriClamp DN 50
Material of probe
1.4401 / FEP
1.4401 / FEP / PFA
1.4571 / PFA
1.4571 / PP
Nominal diameter of probe
6 mm (0.23")
12 mm (0.5")
16 mm (0.62")
Mass
0.16 kg/m (0.1 lb/ft)
0.5 kg/m (0.33 lb/ft)
0.6 kg/m (0.4 lb/ft)
Coating of fillet and tension weight
–
PFA
PP
Tensioning weight dimensions
Ø25 x 100 mm (Ø1 x 4")
–
Material of tensioning weight
1.4571
–
Maximum medium temperature
+200 °C (392 °F)
+150 °C (+302 °F)
+60 °C (+140 °F)
MEDIUM TEMPERATURE
MEDIUM PRESSURE DIAGRAM
Type
F
LANGE TEMPERATURE
200°C
140°C
80°C
20°C
-30°C -1 bar 16 bar 24 bar 32 bar 40 bar
Base model –30…+90 °C (–22…+194 °F)
High-temperature HHor HPtransmitter –30…+200 °C (–22…+392 °F)*
*Limited for coated probes, see Coated probe properties table.

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3.4. DIMENSIONS
HTK––
HTL–

–

HTV–

–

HTW––
HTR–

–

HTP–

–

HTS–

–

HTZ–

–

HTN–

–

HTJ–

–

HTT–

–

HTU–

–

HTD–

–

HTE–

–

HTA––
HTB–

–

HTC–

–

HTH––
HTF––
HTG––
HTX–

–

HTY–

–

HTM–

–

HTQ–

–

HTI–

–


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3.5. EXPLOSION PROTECTION,DESIGNATION,LIMIT VALUES
3.5.1. ATEX Intrinsically safe protection (Ex ia) – ATEX Certificate No.: BKI22ATEX0003 X
Metal housing
High-temperature version with metal housing
with SAP display
HB––6, 8 Ex
without SAP display
HT––6, 8 Ex
with SAP display
HP––6, 8 Ex
without SAP display
HH––6, 8 Ex
Ex marking (ATEX)
II 1G Ex ia IIB T6…T4 Ga II 1G Ex ia IIC T6…T4 Ga II 1G Ex ia IIB T6…T3 Ga II 1G Ex ia IIC T6…T3 Ga
II 1D Ex ia IIIC T85°C…T110°C Da II 1D Ex ia IIIC T85°C…T180°C Da
Ex power supply, intrinsically
safety data
Ui = 30 V, Ii = 140 mA, Pi = 1 W
Ci ≤ 25 nF, Li ≤ 300 µH
Ui = 30 V, Ii = 100 mA,
Pi = 0,75 W
Ci ≤ 25 nF, Li ≤ 300 µH
Ui = 30 V, Ii = 140 mA, Pi = 1 W
Ci ≤ 25 nF, Li ≤ 300 µH
Ui = 30 V, Ii = 100 mA,
Pi = 0,75 W
Ci ≤ 25 nF, Li ≤ 300 µH
Supply voltage 12…30 V DC
Temperature limit data See tables in section 3.5.2.
Cable entry M20x1.5 cable gland
Cable outer diameter Ø6…Ø12 mm (Ø0.23…Ø0.47")
Electrical connection Wire cross-section: 0.5…1.5 mm2(AWG20…AWG15)
3.5.2. Temperature limit data for ATEX (Ex ia) approved models
3.5.2.1 For standard temperature transmitters
Temperature data
Hazardous gas atmospheres
HT/B

–7

–8 Ex
HT/B–9–8 Ex
Explosive dust atmospheres
HT/B

–7

–6 Ex
HT/B–9–6 Ex
Ex ia IIC, Ex ia IIB
Ex ia IIIC
Highest process temperature +80 °C (+176 °F) +90 °C (+194 °F) +100 °C (+212 °F) +80 °C (+176 °F) +90 °C (+194 °F) +100 °C (+212 °F)
Highest surface temperature at the
process connection +70 °C (+158 °F) +90 °C (+194 °F) +100 °C (+212 °F) +75 °C (+167 °F) +90 °C (+194 °F) +100 °C (+212 °F)
Highest ambient temperature +65 °C (149 °F)
Temperature class T6 T5 T4 T85°C T100°C T110°C

htk701en21p02 ♦ 15/56
3.5.2.2 For high- temperature transmitters
Temperature data
H
AZARDOUS GAS ATMOSPHERES
HH/P

–7

–8 Ex
HH/P–9–8 Ex
E
XPLOSIVE DUST ATMOSPHERES
HH/P

–7

–6 Ex
HH/P–9–6 Ex
Ex ia IIC, Ex ia IIB
Ex ia IIIC
Highest process temperature +80 °C
(+176 °F)
+90 °C
(+194 °F)
+100 °C
(+212 °F)
+180 °C
(356 °F)
+80 °C
(+176 °F)
+90 °C
(+194 °F)
+100 °C
(+212 °F)
+180 °C
(356 °F)
Highest surface temperature at
the process connection
+70 °C
(+158 °F)
+90 °C
(+194 °F)
+100 °C
(+212 °F)
+175 °C
(347 °F)
+75 °C
(+167 °F)
+90 °C
(+194 °F)
+100 °C
(+212 °F)
+175 °C
(347 °F)
Highest ambient temperature +65 °C (149 °F)
Temperature class T6 T5 T4 T3 T85°C T100°C T110°C T180°C
3.5.3. ATEX combustible dust protection (Ex t) – ATEX certificate No.: BKI22ATEX0003 X
Metal housing
High-temperature version with metal housing
HP

–

–5 Ex
HH

–

–5 Ex
HT/B–7–9 Ex
HT/B–9–9 Ex
HT/B–7–5 Ex
HT/B–9–5 Ex
Ex marking (ATEX) II 1 D Ex ta IIIC T105°C Da II 1/2 D Ex ta/tb IIIC T85°C…T110°C Da/Db II 1/2 D Ex ta/tb IIIC T85°C…T180°C Da/Db
Waiting time for opening the
cover 0 min 30 min 30 min
Ex power supply*Ui = 30 V DC Ii = 1 A
Supply voltage 12…30 V DC
Temperature limit data See tables in section 3.5.4.
Cable entry M20x1.5 cable glands with “Ex ta” protection
Cable outer diameter Ø6…Ø12 mm (Ø0.23…Ø0.47")
Electrical connection Wire cross-section: 0.5…1.5 mm2(AWG20…AWG15)
* Maximum supply voltage and current to the product while maintaining Ex protection.

htk701en21p02 ♦ 16/56
3.5.4. Temperature limit data for ATEX (Ex t) approved models
3.5.4.1 For standard temperature transmitters
Temperature data
Explosive dust atmospheres
HT/B–7–9 Ex
HT/B

–9

–9 Ex
HT/B–7–5 Ex
HT/B

–9

–5 Ex
Ex ta IIIC
Ex ta/tb IIIC
Highest process temperature +65 °C (149 °F) +80 °C (+176 °F) +90 °C (+194 °F) +100 °C (+212 °F)
Highest surface temperature at
the process connection +65 °C (149 °F) +75 °C (+167 °F) +90 °C (+194 °F) +100 °C (+212 °F)
Highest ambient temperature +65 °C (149 °F)
Temperature class T105°C T85°C T100°C T110°C
3.5.4.2 For high- temperature transmitters
Temperature data
Explosive dust atmospheres
HH/P

–7

–5 Ex
HH/P

–9

–5 Ex
Ex ta/tb IIIC
Highest process temperature +80 °C (+176 °F) +90 °C (+194 °F) +100 °C (+212 °F) +180 °C (356 °F)
Highest surface temperature at
the process connection +75 °C (+167 °F) +90 °C (+194 °F) +100 °C (+212 °F) +175 °C (347 °F)
Highest ambient temperature
+65 °C (149 °F)
Temperature class T85°C T100°C T110°C T180°C

htk701en21p02 ♦ 17/56
3.5.5. IECEx Intrinsically safe protection (Ex ia) – IECEx Certificate No.:
Metal housing
High-temperature version with metal housing
with SAP display
HB––6, 8 Ex
without SAP display
HT––6, 8 Ex
with SAP display
HP––6, 8 Ex
without SAP display
HH––6, 8 Ex
Ex marking (IECEx) Ex ia IIB T6…T4 Ga Ex ia IIC T6…T4 Ga Ex ia IIB T6…T3 Ga Ex ia IIC T6…T3 Ga
Waiting time for opening the
cover Ex ia IIIC T85°C…T110°C Da Ex ia IIIC T85°C…T180°C Da
Ex power supply, intrinsically
safety data
Ui = 30 V, Ii = 140 mA, Pi = 1 W
Ci ≤ 25 nF, Li ≤ 300 µH
Ui = 30 V, Ii = 100 mA,
Pi = 0,75 W
Ci ≤ 25 nF, Li ≤ 300 µH
Ui = 30 V, Ii = 140 mA, Pi = 1 W
Ci ≤ 25 nF, Li ≤ 300 µH
Ui = 30 V, Ii = 100 mA,
Pi = 0,75 W
Ci ≤ 25 nF, Li ≤ 300 µH
Supply voltage 12…30 V DC
Temperature limit data See tables in section 3.5.6.
Cable entry M20x1.5 cable gland
Cable outer diameter Ø6…Ø12 mm (Ø0.23…Ø0.47")
Electrical connection Wire cross-section: 0.5…1.5 mm2(AWG20…AWG15)
3.5.6. Temperature limit data for IECEx (Ex ia) approved models
3.5.6.1 For standard temperature transmitters
Temperature data
Hazardous gas atmospheres
HT/B

–7

–8 Ex
HT/B–9–8 Ex
Explosive dust atmospheres
HT/B

–7

–6 Ex
HT/B–9–6 Ex
Ex ia IIC, Ex ia IIB
Ex ia IIIC
Highest process temperature +80 °C
(+176 °F)
+90 °C
(+194 °F)
+100 °C
(+212 °F)
+80 °C
(+176 °F)
+90 °C
(+194 °F)
+100 °C
(+212 °F)
Highest surface temperature at
the process connection
+70 °C
(+158 °F)
+90 °C
(+194 °F)
+100 °C
(+212 °F)
+75 °C
(+167 °F)
+90 °C
(+194 °F)
+100 °C
(+212 °F)
Highest ambient temperature +65 °C (149 °F)
Temperature class T6 T5 T4 T85°C T100°C T110°C

htk701en21p02 ♦ 18/56
3.5.6.2 For high- temperature transmitters
Temperature data
Hazardous gas atmospheres
HH/P

–7

–8 Ex
HH/P–9–8 Ex
Explosive dust atmospheres
HH/P

–7

–6 Ex
HH/P

–9

–6 Ex
Ex ia IIC, Ex ia IIB
Ex ia IIIC
Highest process temperature
+80 °C
(+176 °F)
+90 °C
(+194 °F)
+100 °C
(+212 °F)
+180 °C
(356 °F)
+80 °C
(+176 °F)
+90 °C
(+194 °F)
+100 °C
(+212 °F)
+180 °C
(356 °F)
Highest surface temperature at
the process connection
+70 °C
(+158 °F)
+90 °C
(+194 °F)
+100 °C
(+212 °F)
+175 °C
(347 °F)
+75 °C
(+167 °F)
+90 °C
(+194 °F)
+100 °C
(+212 °F)
+175 °C
(347 °F)
Highest ambient temperature +65 °C (149 °F)
Temperature class T6 T5 T4 T3 T85°C T100°C T110°C T180°C
3.5.7. IECEx combustible dust protection (Ex t) – IECEx certificate No.:
Metal housing
High-temperature version with metal housing
HP

–

–5 Ex
HH

–

–5 Ex
HT/B–7–9 Ex
HT/B–9–9 Ex
HT/B–7–5 Ex
HT/B–9–5 Ex
Ex marking (IECEx) Ex ta IIIC T105°C Da Ex ta/tb IIIC T85°C…T110°C Da/Db Ex ta/tb IIIC T85°C…T180°C Da/Db
Waiting time for opening the
cover 0 min 30 min 30 min
Ex power supply* Ui = 30 V DC Ii = 1 A
Supply voltage 12…30 V DC
Temperature limit data See tables in section 3.5.8.
Cable entry M20x1.5 cable glands with “Ex ta” protection
Cable outer diameter Ø6…Ø12 mm (Ø0.23…Ø0.47")
Electrical connection Wire cross-section: 0.5…1.5 mm2(AWG20…AWG15)
(*) Maximum supply voltage and current to the product while maintaining Ex protection.

htk701en21p02 ♦ 19/56
3.5.8. Temperature limit data for IECEx (Ex t) approved models
3.5.8.1 For standard temperature transmitters
Temperature data
Explosive dust atmospheres
HT/B–7–9 Ex
HT/B

–9

–9 Ex
HT/B–7–5 Ex
HT/B

–9

–5 Ex
Ex ta IIIC
Ex ta/tb IIIC
Highest process temperature +65 °C (149 °F) +80 °C (+176 °F) +90 °C (+194 °F) +100 °C (+212 °F)
Highest surface temperature at
the process connection +65 °C (149 °F) +75 °C (+167 °F) +90 °C (+194 °F) +100 °C (+212 °F)
Highest ambient temperature +65 °C (149 °F)
Temperature class T105°C T85°C T100°C T110°C
3.5.8.2 For high- temperature transmitters
Temperature data
Explosive dust atmospheres
HH/P

–7

–5 Ex
HH/P

–9

–5 Ex
Ex ta/tb IIIC
Highest process temperature +80 °C (+176 °F) +90 °C (+194 °F) +100 °C (+212 °F) +180 °C (356 °F)
Highest surface temperature at
the process connection +75 °C (+167 °F) +90 °C (+194 °F) +100 °C (+212 °F) +175 °C (347 °F)
Highest ambient temperature
+65 °C (149 °F)
Temperature class T85°C T100°C T110°C T180°C
3.6. ACCESSORIES
•Warranty card •2× M20x1,5 cable gland
•User and programming manual •SAP–300 display unit (ordered separately)
•EU declaration of conformity •Flat seal (if required)

htk701en21p02 ♦ 20/56
3.7. CONDITIONS FOR SAFE USE
Devices with an SAP300 display may NOT be operated in an “Ex ia IIC” environment!
Intrinsically save devices may only be operated from a circuit that complies with the technical data of the device and is marked [Ex ia IIC] or [Ex ia IIB].
Devices with a plastic-coated sensor may only be installed in an “Ex ia IIB” environment free of direct airflow causing charge transfer.
The device may contain components capable of being electrostatically charged! The presence of electrostatic charges can cause sparks and ignition, so
electrostatic charges must be prevented entirely in potentially explosive (Ex) atmospheres!
−To avoid static charge build-up on versions with a plastic-coated sensor, the following safety regulations must be observed:
−The specific resistance of the medium to be measured shall be ≤ 104Ωm.
−The speed of the filling and emptying process must be chosen according to the medium.
−Avoid all mechanical contact with the plastic-coated probe!
−Extreme care must be taken during maintenance when there may be explosive residue in the process tank. The device may only be touched in an
explosive (Ex) environment with a wet antistatic cloth!
If the above regulations are observed, considering the closed technological system, there is no possibility of static charge accumulation, so there is no risk of ignition.
Devices protected against dust ignition may only be operated in a circuit with the parameters specified in the technical data.
In the "Ex ta/tb IIIC" protection, the device cover may only be removed after a minimum waiting time of 30 minutes after de-energizing the device!
Dust accumulation must be prevented on the housing of devices with "Ex ta/tb IIIC" protection.
The aluminum content of the aluminum alloy housing exceeds the limit value, so the device must be protected against impact and friction in potentially
explosive (Ex) environments.
If the device is installed in a place subject to overvoltage, the device must be equipped with overvoltage protection of at least overvoltage Class II!
The device must be earthed to the EP system at the earthing screw point of the device.
3.8. MAINTENANCE AND REPAIR
The warranty card contains the terms and conditions. Before returning the device for repairs, it must be cleaned thoroughly. The parts in contact with the medium may
contain harmful substances; therefore, they must be decontaminated. Our official form (RETURNED EQUIPMENT HANDLING FORM) must be filled and enclosed in
the parcel. Download it from our website www.nivelco.com. The device must be sent back with a declaration of decontamination. A statement must be provided in the
declaration that the decontamination process was successfully.