Severity: 8192
Message: Return type of CI_Session_files_driver::open($save_path, $name) should either be compatible with SessionHandlerInterface::open(string $path, string $name): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Filename: drivers/Session_files_driver.php
Line Number: 132
Backtrace:
File: /home/zytroni1/public_html/coolingquest.com/application/controllers/Website.php
Line: 8
Function: __construct
File: /home/zytroni1/public_html/coolingquest.com/index.php
Line: 318
Function: require_once
Severity: 8192
Message: Return type of CI_Session_files_driver::close() should either be compatible with SessionHandlerInterface::close(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Filename: drivers/Session_files_driver.php
Line Number: 294
Backtrace:
File: /home/zytroni1/public_html/coolingquest.com/application/controllers/Website.php
Line: 8
Function: __construct
File: /home/zytroni1/public_html/coolingquest.com/index.php
Line: 318
Function: require_once
Severity: 8192
Message: Return type of CI_Session_files_driver::read($session_id) should either be compatible with SessionHandlerInterface::read(string $id): string|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Filename: drivers/Session_files_driver.php
Line Number: 168
Backtrace:
File: /home/zytroni1/public_html/coolingquest.com/application/controllers/Website.php
Line: 8
Function: __construct
File: /home/zytroni1/public_html/coolingquest.com/index.php
Line: 318
Function: require_once
Severity: 8192
Message: Return type of CI_Session_files_driver::write($session_id, $session_data) should either be compatible with SessionHandlerInterface::write(string $id, string $data): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Filename: drivers/Session_files_driver.php
Line Number: 237
Backtrace:
File: /home/zytroni1/public_html/coolingquest.com/application/controllers/Website.php
Line: 8
Function: __construct
File: /home/zytroni1/public_html/coolingquest.com/index.php
Line: 318
Function: require_once
Severity: 8192
Message: Return type of CI_Session_files_driver::destroy($session_id) should either be compatible with SessionHandlerInterface::destroy(string $id): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Filename: drivers/Session_files_driver.php
Line Number: 317
Backtrace:
File: /home/zytroni1/public_html/coolingquest.com/application/controllers/Website.php
Line: 8
Function: __construct
File: /home/zytroni1/public_html/coolingquest.com/index.php
Line: 318
Function: require_once
Severity: 8192
Message: Return type of CI_Session_files_driver::gc($maxlifetime) should either be compatible with SessionHandlerInterface::gc(int $max_lifetime): int|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Filename: drivers/Session_files_driver.php
Line Number: 358
Backtrace:
File: /home/zytroni1/public_html/coolingquest.com/application/controllers/Website.php
Line: 8
Function: __construct
File: /home/zytroni1/public_html/coolingquest.com/index.php
Line: 318
Function: require_once
Severity: Warning
Message: ini_set(): Session ini settings cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 282
Backtrace:
File: /home/zytroni1/public_html/coolingquest.com/application/controllers/Website.php
Line: 8
Function: __construct
File: /home/zytroni1/public_html/coolingquest.com/index.php
Line: 318
Function: require_once
Severity: Warning
Message: session_set_cookie_params(): Session cookie parameters cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 294
Backtrace:
File: /home/zytroni1/public_html/coolingquest.com/application/controllers/Website.php
Line: 8
Function: __construct
File: /home/zytroni1/public_html/coolingquest.com/index.php
Line: 318
Function: require_once
Severity: Warning
Message: ini_set(): Session ini settings cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 304
Backtrace:
File: /home/zytroni1/public_html/coolingquest.com/application/controllers/Website.php
Line: 8
Function: __construct
File: /home/zytroni1/public_html/coolingquest.com/index.php
Line: 318
Function: require_once
Severity: Warning
Message: ini_set(): Session ini settings cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 314
Backtrace:
File: /home/zytroni1/public_html/coolingquest.com/application/controllers/Website.php
Line: 8
Function: __construct
File: /home/zytroni1/public_html/coolingquest.com/index.php
Line: 318
Function: require_once
Severity: Warning
Message: ini_set(): Session ini settings cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 315
Backtrace:
File: /home/zytroni1/public_html/coolingquest.com/application/controllers/Website.php
Line: 8
Function: __construct
File: /home/zytroni1/public_html/coolingquest.com/index.php
Line: 318
Function: require_once
Severity: Warning
Message: ini_set(): Session ini settings cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 316
Backtrace:
File: /home/zytroni1/public_html/coolingquest.com/application/controllers/Website.php
Line: 8
Function: __construct
File: /home/zytroni1/public_html/coolingquest.com/index.php
Line: 318
Function: require_once
Severity: Warning
Message: ini_set(): Session ini settings cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 317
Backtrace:
File: /home/zytroni1/public_html/coolingquest.com/application/controllers/Website.php
Line: 8
Function: __construct
File: /home/zytroni1/public_html/coolingquest.com/index.php
Line: 318
Function: require_once
Severity: Warning
Message: ini_set(): Session ini settings cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 375
Backtrace:
File: /home/zytroni1/public_html/coolingquest.com/application/controllers/Website.php
Line: 8
Function: __construct
File: /home/zytroni1/public_html/coolingquest.com/index.php
Line: 318
Function: require_once
Severity: Warning
Message: session_set_save_handler(): Session save handler cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 110
Backtrace:
File: /home/zytroni1/public_html/coolingquest.com/application/controllers/Website.php
Line: 8
Function: __construct
File: /home/zytroni1/public_html/coolingquest.com/index.php
Line: 318
Function: require_once
Severity: Warning
Message: session_start(): Session cannot be started after headers have already been sent
Filename: Session/Session.php
Line Number: 143
Backtrace:
File: /home/zytroni1/public_html/coolingquest.com/application/controllers/Website.php
Line: 8
Function: __construct
File: /home/zytroni1/public_html/coolingquest.com/index.php
Line: 318
Function: require_once
Ask An Expert
Double Beam UV VIS Spectrophotometer TRDUV-603 is a small device that measures multiple wavelengths with a bandwidth of 1.8 nm and a wavelength range of 190 to 1100 nm. Blazed holographic gratings with a photometric accuracy of 0.3 % T (0 to 100 % T), 0.002A (0 to 0.5A), 0.004A (0.5A to 1A). Has an 8-inch touchscreen for ease of operating and parameter observing, and it has a Photometric Display Range of 0.0 to 200.0 % T, -0.301 to 4.000 A, 0.000 to 9999 C. It performs admirably in both qualitative and quantitative testing.
| Monochromatic type | Czerny turner |
| Focal length | 160 mm |
| Wavelength Range | 190 to 1100 nm |
| Band Width | 1.8 nm |
| Wavelength Accuracy | ±0.3 nm |
| Wavelength Repeatability | ≤0.01 nm |
| Photometric Display Range | 0.0 to 200 .0% T , -0.301 to 4.000 A , 0.000 to 9999 C |
| Photometric Accuracy | ±0.3% T(0 to 100%T) / ±0.002A(0 to 0.5A) / ±0.004A(0.5A to1A) |
| Photometric Repeatability | 0.15% T(0 to 100%T) / ±0.001A(0 to 0.5A) / ±0.002A(0.5A to 1A) |
| Photometric Mode | T,A,C,E |
| Stray Light | ≤0.03% τ (220nm NaI, 360 nm NaNO2) |
| Stability | 0.0005A/h500 nm |
| Detector | Import Silicon Photodiode |
| Scanning speed | Fast-medium-slow |
| Power Requirement | AC 220 V±22 50 Hz±1 Hz,200 W |
| Baseline Flatness | ≤0.002A(200 to1090 nm) |
| Grating | 1200 lines/mm |
| Drifting | ≤0.0009 Abs/30 min |
| Noise | 100 % (T)≤0.15 % (T); 0 % (T)≤0.1 % (T) |
| Dimensions(W×D×H) | 74×63×45 Cm |
| Weight | 35 Kg |
