■ 작동 원리

Kemtrak NBP007은 CIP 사이클에 존재하는 온도와 화학 물질을 견딜 수 있도록 설계된 견고한 프로세스 후방 산란 프로브를 사용합니다. 파이버 옵틱은 빛을 측정 지점과 후면으로 파이프하는데 사용되며, 측정 프로브에는 전자 부품이나 서비스 가능한 부품이 없습니다.

Kemtrak NBP007 후방 산란 농도계는 두 가지 구성 요소로 이루어져 있습니다.

1. 농도계 : 농도계에는 광원 및 감지기를 포함한 모든 전자 장치가 포함되어 있습니다.

2. 측정 프로브 : 견고한 광섬유 후방 산란 프로브

• 농도 측정

• 인터페이스 감지

• 셀 및 바이오매스 밀도

• 결정 제어

• CIP 주기 제어 및 최적화

• 제품 차별화 및 식별

Technical Data

Measurement Principle
- Proprietary NIR backscatter photometric technique for fiber optic backscatter probes

Measurement Range
LOW 0.0005 % (ca. 5NTU) to 10% total suspended solids
HIGH 0.0005% (ca. 5 NTU) to 100% total suspended solids
Measurement range is factory configured

Repeatability
- Typically <± 1 % of respective measuring range

Accuracy
Typically <± 2 % at the calibration points

In-line Hygienic Fiber Optic Measurement Probe
- Process connection : Tri-Clamp® (ISO 2852 & DIN 32676) or Ø 12mm PG13.5 (DIN 19263:2007-05)
- Line size : DN50 (2”) and above & tanks/reactors
- Materials : Stainless steel EN 1.4435 (316L), Hastelloy C-22
- Window : Sapphire
- Surface Finish : Ra < 0.38µm
- Temperature : Ambient & process temperatures up to 275 °C (527 °F)
- Pressure : 10mbar to 100bar (0,14 – 1450psi)
- Cable length : 5m standard (16.4foot) / Lengths up to 50m (164foot)

Light Source
- High performance near infra-red (NIR) light emitting diode
- Typical NIR lamp lifetime : > 100 000 hrs

Photometer Housing
- Stainless steel EN 1.4301 (X5CrNi18-10), AISI 304 (V2A)
- Captive lid screws & external mounting brackets stainless steel
- 244 x 215 x 105 mm (L x W x D)
- IP 65 / EN 60529

Display
- 16 x 4 alphanumeric white on blue dot matrix LCD display
- LED background illuminated
- Measurement updates every second
- LED 1 (green) : Power on
- LED 2 (red) : System fault
- LED 3 & 4 (orange) : Alarm 1 & Alarm 2
- LED 5 (blue) : Clean / Hold

Operation
- 4 push buttons
- Remote HTML/Java interface (TCP/IP connection via Ethernet port)

Software Features :
• Auto gain : Fully automatic photometer gain switching
• Auto zero : Automatically, locally or remotely activated zero
• Calibration : 16 linearization tables for concentration & mA output
• Damping : From 0 to 9999s with noise (air bubble / particle) filter
• Memory : Nonvolatile - all data retained upon power failure
• Security : Alphanumeric password protection

Data Logger
• >17000 data points (timestamp, average, max. & min.), ring buffer
• Configurable log time interval 1s to 24hr

Event Logger
• >16000 events, ring buffer
• Timestamp, alarms, zeroing, cleaning, product change, calibration & system events (power, system warning & error messages)

Automatic Cleaning Control
• Automatic cleaning sequence, triggering dedicated relay output
• Manual trigger or external trigger via digital input
• Configurable automatic cleaning interval, 15min to 2months
• Configurable cleaning duration from 0 to 9999s
• Auto-zero after clean option
• Hold value after clean (to equilibrate) 0 to 9999s

Remote Input
- 5 x Digital input (potential free contact) for :
• Input 1-3 : Product/range selection
• Input 4 : Zero, instant zero, clean or clean & Zero
• input 5 : Hold (freeze output), data log control or light source control

mA Output
- 1 x selectable 0 – 20mA / 4 - 20mA (NAMUR, max 21.6mA)
- Optional second mA output
- Galvanically isolated, tested during final inspection to 500 VDC
- Accuracy : < 0.1%
- Resolution : 0.025%
- Load : 0 – 600Ohm

Relay Outputs
- 1 x 1A 240VAC Failsafe output (active when system is ok)
- 2 x 1A 240VAC User configurable (alarm, PID)
- 1 x 1A 240VAC Automatic cleaning control
- Fuses : 4 x 1A (type: MXT), max 100A breaking capacity
- LED status indicators flash when relays are active

Fail-Safe :
- Dedicated relay output, 1A 240 VAC
- mA output value used to signal a system fault (NAMUR <3.6mA or >21.0mA)

Network interface (remote communications) :
- TCP/IP, 10Base-T and 100Base-TX Link
- Connector : RJ45
- Protocol :
1) HTML/Java interface using native protocol over TCP/IP
Software : Web browser with Java version 6 or later
2) MODBUS server (slave) over TCP/IP (V1.1b3 compliant)
Functions : (0x03, 0x04, 0x2B/0x0E - conformity 0x01)

Operating Conditions
- Ambient temperature : 0°C to +50°C (32°F to 122°F)
- Transport : -20°C to +70°C (-4°F to 158°F)

Power Supply
- 100-240VAC, 50-60Hz, & 22 - 30VAC/VDC
- Mains fuse : 1A (type MST), Max breaking capacity 35A

Power Consumption
- 25VA (max.)

Certificates
CE, ISO 9001:2015, IECEx,
ATEX Ex d IIB + H2 T5 IP66 Category II 2 G,
UL Class I Division I & II Gas Groups B,C,D,
UL Class II Groups E,F,G and Class III,
NEMA 479