FLXA21 is a modular 2-wire analyzer platform for continuous industrial liquid measurement.
MODULAR ANALYZER PLATFORM The FLXA21 family supports pH/ORP, contacting conductivity, inductive conductivity and dissolved oxygen measurement configurations.
CORE PARAMETERS
2-Wire
Analyzer
16–40 V DC
1-Sensor Supply
IP66
Housing Rating
COMPACT FIELD ANALYSIS
The FLXA21 uses a polycarbonate housing, anti-glare LCD touch screen and supports a 12-language display environment. The platform can be configured for single- or dual-sensor measurement depending on the selected input arrangement.
We have a wide range of brands and products for various industries, we provide services to tens of thousands of customers around the world.
The FU20-05-T1-NPT is a wide-body Yokogawa pH/ORP sensor designed around four measurement elements: pH, reference, temperature and ORP. This configuration combines a fixed 5 m cable, a Pt1000 temperature element and a 3/4-inch tapered NPT connection in one sensor assembly.
◈
⌁
CONFIGURATION CODE
-05
5 m fixed cable
-T1
Pt1000 temperature element
-NPT
Dome-shaped / tapered thread
PPS body · G-glass pH element · Ag/AgCl reference · solid platinum ORP element
01 / TECHNICAL PROFILE
Measurement Architecture
◉
Four-Element Sensor
The FU20 platform combines pH glass, reference, temperature and ORP elements, allowing pH and ORP measurement within one sensor construction.
MEASUREMENT RANGE
pH 0 to 14 ORP -1500 to +1500 mV Temperature -10 to 105 °C for dome shape
Yokogawa's current general specification gives the room-temperature pH range as 0–14 and notes that high-temperature operation outside pH 2–12 can substantially shorten sensor life.
⌁
Process Connection
The -NPT configuration uses a dome-shaped sensor arrangement with a 3/4-inch tapered thread suitable for fixing into a 3/4 NPT female connection.
CABLE
5 m
Fixed cable
TEMP.
Pt1000
Temperature element
BODY
PPS
Wide-body construction
IP RATING
IP67
Environmental protection
REFERENCE
Ag/AgCl
Saturated KCl system
MATERIAL & CONSTRUCTION
Sensor body
PPS GF40 for NPT configuration
Measuring sensor
G-glass
Reference junction
Porous PTFE
Earthing / ORP
Solid platinum
O-ring
Viton for NPT configuration
PERFORMANCE AT 25 °C
pH slope
> 96% theoretical
Asymmetry potential
8 ± 15 mV
Junction resistance
< 10 kΩ
pH response time
< 15 sec to 90%
Temperature response
< 1 min to 90%
02 / FU20 FAMILY
One platform, different process needs.
FU20-05
5 m fixed cable
Available with different temperature and body/thread configurations.
FU20-10 / -20
Longer fixed cable options
The same FU20 platform supports 10 m and 20 m fixed-cable variants.
FU20-VS
VarioPin configuration
A connector-based configuration for installations where a removable cable arrangement is preferred.
For FU20-05-T1-NPT, the complete suffix combination specifically defines the 5 m fixed cable, Pt1000 temperature element and NPT dome-shaped configuration.
✦
03 / DIRECT CONNECTION
Need the right FU20 configuration?
Send the exact model code and your required quantity. Our sales team can assist with configuration checking, availability and order coordination.
EMAIL
sales@amikon.cn
PHONE / WHATSAPP
86-18020776792
SALES MANAGER
Miya zheng
04 / PURCHASE QUESTIONS
FU20-05-T1-NPT — Before You Order
Q1 · Why choose FU20-05-T1-NPT when both pH and ORP readings are required?
The FU20 platform integrates separate pH, reference, temperature and ORP elements, allowing pH and ORP measurement through one sensor assembly. This can simplify the sensor arrangement where both electrochemical measurements are required.
Q2 · What does the FU20-05-T1-NPT suffix combination specify?
The code combines a 5 m fixed cable (-05), Pt1000 temperature element (-T1) and the -NPT dome-shaped configuration with a tapered thread.
Q3 · Is FU20-05-T1-NPT suitable for high-temperature pH measurement?
The dome-shaped FU20 operating temperature range is specified as -10 to 105 °C. At elevated temperature, Yokogawa notes that operation outside approximately pH 2–12 can significantly shorten sensor life, so both process temperature and pH conditions should be evaluated together.
Q4 · What installation detail matters most for FU20-05-T1-NPT replacement?
The -NPT version uses a 3/4-inch tapered thread designed for a 3/4 NPT female connection. When replacing an installed sensor, the process connection, cable length and Pt1000 configuration should therefore match the existing installation requirements.
Q5 · What should be considered when replacing an FU20-05-T1-NPT after storage?
The pH glass membrane gradually deteriorates during storage. Yokogawa recommends avoiding prolonged storage and states that use within one year is recommended. The sensing glass and liquid junction should also be protected from drying, with the supplied protective cap fitted during storage.
Customized Customer Relation Management and Order Tracking System
No additional charges, handling charges or hidden charges are incurred.
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AFTER-SALES
Order Protection
01 Please contact us within 7 days if you have any question after receiving the items. 02 Returned items should remain in their original condition with the specific reason for return. A return or replacement will be arranged after the returned items are received. 03 The buyer is responsible for all shipping costs incurred.
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